The Project Gutenberg EBook of Prevalence of Imprisonment in the U.S. Population, 1974-2001, by Thomas P. Bonczar This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at www.gutenberg.org Title: Prevalence of Imprisonment in the U.S. Population, 1974-2001 Author: Thomas P. Bonczar Release Date: June 23, 2009 [EBook #29211] Language: English Character set encoding: ISO-8859-1 *** START OF THIS PROJECT GUTENBERG EBOOK IMPRISONMENT, 1974-2001 *** Produced by Al Haines
At yearend 2001 over 5.6 million U.S. adults had ever served time in State or Federal prison
* Of adults in 2001 who had ever served time in prison, nearly as many were black (2,166,000) as were white (2,203,000). An estimated 997,000 were Hispanic.
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At yearend 2001, over 5.6 million U.S. residents had ever served time
in State or Federal prison
U.S. residents Percent of adult
ever incarcerated Number U.S. residents
1974 1991 2001 1974 1991 2001
Total 1,819,000 3,437,000 5,618,000 1.3% 1.8% 2.7%
Male 1,677,000 3,142,000 5,037,000 2.3 3.4 4.9
White 837,000 1,395,000 1,978,000 1.4 1.9 2.6
Black 595,000 1,181,000 1,936,000 8.7 12.0 16.6
Hispanic 94,000 392,000 911,000 2.3 4.9 7.7
Female 142,000 295,000 581,000 0.2% 0.3% 0.5%
White 86,000 139,000 225,000 0.1 0.2 0.3
Black 51,000 109,000 231,000 0.6 0.9 1.7
Hispanic 8,000 30,000 86,000 0.2 0.4 0.7
White 922,000 1,533,000 2,203,000 0.8% 1.1% 1.4%
Black 646,000 1,290,000 2,166,000 4.5 6.2 8.9
Hispanic 102,000 422,000 997,000 1.3 2.7 4.3
U.S. adult resident population
1974 1991 2001
Total 145,356,000 187,982,751 210,207,901
Male 69,217,000 90,362,099 101,492,258
White 57,704,209 69,718,665 74,217,435
Black 6,593,640 9,465,170 11,287,707
Hispanic 3,923,600 8,022,134 11,452,968
Female 76,133,000 97,620,652 108,715,643
White 63,173,779 75,415,364 78,956,773
Black 7,813,782 11,222,468 13,178,900
Hispanic 4,074,628 7,655,854 11,496,534
White 120,878,496 145,134,029 153,174,207
Black 14,406,407 20,687,638 24,466,606
Hispanic 7,998,062 15,677,988 22,949,502
Note: Because of estimation and other rounding procedures, some
detail may not add to totals and may not match precisely totals
in other tables.
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* The rate of ever having gone to prison among adult black males(16.6%) was over twice as high as among adult Hispanic males (7.7%) and over 6 times as high as among adult white males (2.6%).
* U.S. residents ages 35 to 39 in 2001 were more likely to have gone to prison (3.8%) than any other age group, up from 2.3% in 1991.
* An estimated 22% of black males ages 35 to 44 in 2001 had ever been confined in State or Federal prison, compared to 10.0% of Hispanic males and 3.5% of white males in the same age group.
If incarceration rates remain unchanged, 6.6% of U.S. residents born in 2001 will go to prison at some time during their lifetime
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If incarceration rates remain unchanged, 6.6% of U.S. residents born
in 2001 will go to prison at some time during their lifetime
Percent ever going to prison during lifetime,
born in--
1974 1991 2001
Total 1.9% 5.2% 6.6%
Male 3.6 9.1 11.3
White 2.2 4.4 5.9
Black 13.4 29.4 32.2
Hispanic 4.0 16.3 17.2
Female 0.3% 1.1% 1.8%
White 0.2 0.5 0.9
Black 1.1 3.6 5.6
Hispanic 0.4 1.5 2.2
White 1.2% 2.5% 3.4%
Black 7.0 16.5 18.6
Hispanic 2.2 9.5 10.0
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* About 1 in 3 black males, 1 in 6 Hispanic males, and 1 in 17 white males are expected to go to prison during their lifetime, if current incarceration rates remain unchanged.
* For women, the chances of going to prison were 6 times greater in 2001 (1.8%) than in 1974 (0.3%); for men, the chances of going to prison were over 3 times greater in 2001 (11.3%) than in 1974 (3.6%).
At yearend 2001 there were 1,319,000 adults confined in State or Federal prison and an estimated 4,299,000 living former prisoners. A total of 5,618,000 U.S. adult residents, or about 1 in every 37 U.S. adults, had ever served time in prison. Estimates of the prevalence of imprisonment in the U.S. population, presented here for the first time, are based on a demographic model incorporating rates of mortality and first incarceration in prison.
Between 1974 and 2001, the prevalence of imprisonment increased by nearly 3.8 million. This included a 1.1 million increase in the number of adults in prison (up from 216,000) and a nearly 2.7 million increase in the number of living former prisoners (up from 1,603,000).
If rates of first incarceration remain unchanged, 6.6% of all persons born in the United States in 2001 will go to State or Federal prison during their lifetime, up from 5.2% in 1991, and 1.9% in 1974. Unlike the prevalence of ever having gone to prison, which estimates the extent of past experiences, the lifetime likelihood of going to prison is an estimate of the chances of future incarceration, given unchanged rates of first incarceration and mortality.
4.3 million U.S. residents in 2001 were former prisoners
Of the estimated 5.6 million adults in the United States who had been incarcerated in State or Federal prison at some time before yearend 2001, nearly 4.3 million were no longer in prison (table 1). Former prisoners accounted for 77% of all adult residents who had ever been confined in prison.
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Table 1. Prevalence of incarceration in a State or Federal prison, by
current and former prisoners, 1974-2001
Current and former prisoners ever incarcerated in a State
or Federal prison--
1974 1979 1986 1991 1997 2001
Number incarcerated
Total 1,819,000 2,100,000 2,667,000 3,437,000 4,652,000 5,618,000
Current 216,000 302,000 524,000 788,000 1,171,000 1,319,000
Former 1,603,000 1,798,000 2,143,000 2,649,000 3,481,000 4,299,000
Ever incarcerated rate*
Total 1,251 1,308 1,516 1,828 2,336 2,673
Current 149 188 298 419 588 628
Former 1,102 1,120 1,218 1,409 1,748 2,045
Note: Numbers of current adult prisoners from National Prisoner Statistics
data series. Former prisoner statistics based on inmate survey data.
Estimates were rounded to the nearest 1,000. See Methodology for
estimation procedures.
*The number ever incarcerated per 100,000 adult U.S. residents.
U.S. adult resident population
1974 1986 1991 1997 2001
145,356,000 175,886,630 187,982,751 199,121,734 210,207,901
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Persons ages 35 to 44 comprised the largest age group, accounting for 3 out of 10 former prisoners at yearend 2001 (1,280,000). Former prisoners were older than those currently in State or Federal prison, with 49% of former prisoners age 45 or older compared to 13% of persons confined on December 31, 2001. Current prisoners outnumbered former prisoners only among those ages 18 to 24 (254,000 compared with 155,000).
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Number of adults with prison experience, 2001
Former Current
Age inmates inmates
Total 4,299,000 1,319,000
18-24 155,000 254,000
25-34 775,000 511,000
35-44 1,280,000 385,000
45-54 1,002,000 130,000
55-64 509,000 30,000
65 or older 578,000 9,000
Note: See Methodology for estimation procedures.
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More than two-thirds of former prisoners no longer under correctional supervision
At yearend 2001 former prisoners included 731,147 persons on parole, an estimated 437,000 persons on probation who had either served part of their current sentence in prison or been confined in prison on a previous sentence, and an estimated 166,000 jail inmates who had served a previous sentence in prison. An estimated 3 million former prisoners were no longer under correctional supervision as of yearend 2001.
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Former State and Federal prisoners, 2001
Number Percent
Total 4,299,000 100.0%
Under supervision 1,334,000 31.0
Parole 731,000 17.0
Probation 437,000 10.2
Jail 166,000 3.9
Not under supervision 2,965,000 69.0
Note: Estimates rounded to nearest 1,000.
----------------------------------------------------------------------
Demographic techniques used to create prevalence estimates
Estimates of the prevalence of ever having gone to prison were derived from generation life table techniques. The prevalence of ever having gone to prison includes adults currently in prison and living former prisoners.
One-day counts of the number of adults in prison are available through the National Prisoner Statistics program (NPS). Collected annually since 1926, the NPS provides a count at yearend of persons held in Federal and State prisons.
To obtain the number of persons who had ever gone to prison, separate generation life tables were prepared for persons alive between 1974 and 2001. These tables model the first incarceration and mortality experience of each birth cohort as it proceeded through life. Estimates were made of the number of persons going to prison for the first time, by year of age, and the number who had been incarcerated and survived to each later age.
Rates of first incarceration during a 12-month period were developed from prison inmate surveys conducted in 1974, 1979, 1986, 1991, and 1997, a period during which admission rates increased after many years of relative stability.
Prevalence estimates for selected calendar years represent a sum of the contribution of each birth cohort to the total number of adults alive who had ever gone to prison. The number of former prisoners was obtained by subtracting the number of prisoners at yearend (NPS) from the total.
Estimates exclude admissions to local jails, due to the absence of data needed to calculate first admissions to jail. (See Methodology for estimation procedures and limitations.)
1 in 37 adult U.S. residents in 2001 had ever served time in prison
The 5.6 million adult U.S. residents who were current and former prisoners, represented an increase of 3.8 million since 1974. At yearend 2001, 2,673 persons per 100,000 adult U.S. residents had ever gone to prison, up from 1,251 per 100,000 adult residents in 1974. Overall, approximately 1 in 37 adult residents in 2001 had ever served time in a State or Federal prison.
As a percent of all adults who had ever gone to a State or Federal prison, the number of former prisoners has steadily declined (from 88% in 1974 to 77% in 2001). The decline occurred as the number of adults confined in prison at yearend grew by 1.1 million -- a 6-fold increase. Over the 27-year period the number of adult prison inmates rose from 216,000 to 1,319,000. By yearend 2001, there were 628 prison inmates per 100,000 adult residents, up from 149 in 1974.
Between 1974 and 2001 the number of former prisoners living in the United States more than doubled, from 1,603,000 to 4,299,000. Relative to the adult population, the number of former prisoners totaled 2,045 per 100,000 adult U.S. residents in 2001, up from 1,102 per 100,000 in 1974. At yearend 2001, 1 in every 49 adults in the United States was a former prisoner.
Two-thirds of the increase in number ever incarcerated due to rise in first incarceration rates
Nearly two-thirds of the 3.8 million increase in the number of adults ever incarcerated in prison between 1974 and 2001 occurred as a result of an increase in the rates of first incarceration. In 1974 the number of persons admitted to prison for the first time totaled 44 per 100,000 adult residents. By 2001 the rate had nearly tripled, reaching 129 first admissions per 100,000 adults.
Over 40% of the total increase in first incarceration rates occurred between 1986 and 1991. First incarceration rates increased from 73 per 100,000 in 1986 to 111 in 1991.
About a third of the 3.8 million increase in the number ever incarcerated occurred as a result of growth in the U.S. resident population. Based on estimates from the U.S. Census Bureau, the number of residents 18 and older increased from 145 million in 1974 to 210 million in 2001. Had the rates of first incarceration remained stable at 1974 levels, the number of adults who had ever gone to prison would have increased by an estimated 1.3 million.
In every year, the rates of first incarceration varied by age (figure 1). In 2001 sharply higher first incarceration rates were found for each older birth cohort up to a peak of 350 per 100,000 at age 20. These rates then dropped steadily with each older age category.
---------------------------------------------------------------------- Figure 1 First incarceration rates rose sharply among persons under age 45 Number first incarcerated per 100,000 U.S. residents.* Age at first incarceration 1974 1986 1991 2001 12 0 0 0 0 13 0 0 1 0 14 1 0 6 0 15 6 8 27 12 16 25 29 67 58 17 66 81 139 152 18 107 143 219 254 19 142 203 295 325 20 140 217 307 350 21 143 209 306 344 22 133 188 274 329 23 132 172 285 304 24 113 164 261 285 25 92 153 254 280 26 81 142 227 274 27 79 128 224 282 28 79 116 210 262 29 68 116 189 268 30 55 112 179 244 31 45 107 164 243 32 40 93 148 217 33 38 87 123 206 34 36 82 120 196 35 38 78 125 198 36 36 74 126 195 37 34 68 114 177 38 28 64 103 153 39 23 56 92 129 40 21 50 83 123 41 18 43 75 116 42 18 38 63 122 43 16 42 56 114 44 15 41 48 98 45 13 41 46 77 46 12 34 44 65 47 12 33 45 58 48 11 35 46 53 49 10 28 44 43 50 10 26 35 42 51 8 15 27 42 52 9 16 25 41 53 7 12 27 36 54 7 16 30 28 55 8 15 33 25 56 7 14 28 21 57 6 10 25 18 58 4 9 19 17 59 4 9 19 16 60 2 7 15 15 61 2 5 10 16 62 3 5 12 19 63 3 7 12 15 64 4 7 11 11 65 3 5 5 4 66 2 2 4 2 67 2 2 3 3 68 3 5 3 4 69 2 4 5 5 70 2 3 7 5 71 2 2 7 6 72 2 2 4 4 73 1 2 3 1 74 0 0 2 0 75 0 0 4 0 76 0 0 2 3 77 0 0 2 3 78 0 0 2 3 79 0 0 5 0 80 0 0 5 0 *The number first incarcerated at each age divided by the number at risk to first incarceration, times 100,000. Note: 3-year averages were used to smooth age-specific rates. ----------------------------------------------------------------------
Between 1974 and 2001 the rate of first incarceration rose in nearly every age-specific category. The largest increases occurred among younger age cohorts -- those that already had high first incarceration rates. The peak incarceration rate increased by over 200 persons per 100,000 (from 143 at age 21 in 1974, to 350 at age 20 in 2001). Rates increased even among persons age 45 or older.
In 2001, 3 out of 10 adults ever incarcerated were age 35 to 44
Persons between ages 35 and 44 accounted for the largest number of current and former prisoners at yearend 2001 (table 2). Born between 1957 and 1966, these persons turned 18 in the late 1970s and early 1980s when first incarceration rates began to climb. Between 1974 and 2001, the number ever incarcerated in this age group rose from 324,000 to 1.67 million.
Among persons between ages 25 and 34, the number ever incarcerated nearly quadrupled (from 343,000 in 1974 to 1.29 million in 2001). While persons in this age group also experienced rising first incarceration rates, they were subject to these rates for a smaller portion of their lifespan than those ages 35 to 44.
As a percent of those ever incarcerated, persons ages 35 to 44 increased from 18% in 1974 to 30% by 2001; persons age 25 to 34 increased from 19% in 1974 to 23% in 2001.
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Table 1. Prevalence of incarceration in a State or Federal prison, by
current and former prisoners, 1974-2001
Current and former prisoners ever incarcerated in a State
or Federal prison--
1974 1979 1986 1991 1997 2001
Number incarcerated
Total 1,819,000 2,100,000 2,667,000 3,437,000 4,652,000 5,618,000
Current 216,000 302,000 524,000 788,000 1,171,000 1,319,000
Former 1,603,000 1,798,000 2,143,000 2,649,000 3,481,000 4,299,000
Ever incarcerated rate*
Total 1,251 1,308 1,516 1,828 2,336 2,673
Current 149 188 298 419 588 628
Former 1,102 1,120 1,218 1,409 1,748 2,045
Note: Numbers of current adult prisoners from National Prisoner Statistics
data series. Former prisoner statistics based on inmate survey data.
Estimates were rounded to the nearest 1,000. See Methodology for
estimation procedures.
*The number ever incarcerated per 100,000 adult U.S. residents.
U.S. adult resident population
1974 1986 1991 1997 2001
145,356,000 175,886,630 187,982,751 199,121,734 210,207,901
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Prevalence rates up sharply among persons under age 50
Between 1974 and 2001, the rise in first incarceration rates had the largest effects on younger age groups. The percent of persons ever incarcerated tripled among persons ages 25 to 29 (from 1.0% in 1974 to 3.1% in 2001)and more than doubled among persons ages 30 to 34 (from 1.3% to 3.7%) and persons ages 35 to 39 (from 1.4% to 3.8%) (table 3).
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Table 3. Percent of adult population ever incarcerated in a State or
Federal prison, by age, 1974-2001
Percent of adult population ever incarcerated in a State
or Federal prison
Age 1974 1979 1986 1991 1997 2001
Total 1.3% 1.3% 1.5% 1.8% 2.3% 2.7%
18-19 0.3 0.3 0.4 0.5 0.6 0.6
20-24 0.7 0.8 1.0 1.3 1.8 1.8
25-29 1.0 1.2 1.6 2.1 2.7 3.1
30-34 1.3 1.3 1.8 2.3 3.2 3.7
35-39 1.4 1.4 1.7 2.3 3.1 3.8
40-44 1.5 1.5 1.7 2.1 2.9 3.6
45-49 1.5 1.5 1.7 1.9 2.5 3.2
50-54 1.5 1.5 1.7 1.8 2.2 2.6
55-59 1.5 1.6 1.6 1.8 2.0 2.2
60-64 1.5 1.5 1.6 1.6 1.9 2.0
65 or older 1.5 1.5 1.5 1.6 1.6 1.7
Note: Percents by age were based on intercensal resident population
estimates from the U.S. Census Bureau. See Methodology for data
sources.
U.S. adult resident population
1974 1979 1986 1991 1997 2001
Total 145,356,000 160,463,000 175,886,630 187,982,751 199,121,734 210,207,901
18-19 8,196,000 8,698,000 7,571,080 7,562,252 7,629,647 8,349,428
20-24 18,757,000 21,096,000 21,147,811 19,756,380 18,078,783 19,863,153
25-29 16,429,000 19,078,000 21,742,173 21,509,229 19,529,293 18,057,849
30-34 13,644,000 16,960,000 20,167,953 22,482,213 21,434,194 19,971,052
35-39 11,400,000 13,591,000 17,839,473 20,486,038 22,851,041 21,801,103
40-44 11,355,000 11,522,000 14,185,094 18,553,907 21,376,552 23,144,035
45-49 11,843,000 11,211,000 11,658,854 14,135,160 18,558,879 20,879,652
50-54 11,958,000 11,725,000 10,868,729 11,410,881 14,518,458 18,117,187
55-59 10,386,000 11,582,000 11,210,396 10,345,736 11,434,732 14,092,339
60-64 9,327,000 9,867,000 10,902,949 10,518,068 9,913,280 11,049,281
65 or older 22,061,000 25,133,000 28,592,118 31,222,887 33,796,875 34,882,826
Note: Because of estimation and other rounding procedures, some detail may
not add to totals and may not match precisely totals in other tables.
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In contrast, the rise in the percents ever incarcerated was more modest among persons 50 or older. Although these age groups also experienced rising first incarceration rates, they were exposed at older ages when first incarceration rates are low. Persons age 65 and older were the least affected by the increases in first incarceration rates, with percents ever incarcerated rising from 1.5% in 1974 to 1.7% in 2001.
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Table 4. Number of adults ever incarcerated in a State or Federal
prison, by gender, race, and Hispanic origin, 1974-2001
Number of adults ever incarcerated in a State or Federal prison
1974 1979 1986 1991 1997 2001
Gender
Male 1,677,000 1,934,000 2,449,000 3,142,000 4,205,000 5,037,000
Female 142,000 165,000 217,000 295,000 447,000 581,000
Race/Hispanic origin
White* 922,000 1,052,000 1,286,000 1,533,000 1,909,000 2,203,000
Male 837,000 958,000 1,173,000 1,395,000 1,724,000 1,978,000
Female 86,000 94,000 113,000 139,000 185,000 225,000
Black* 646,000 766,000 963,000 1,290,000 1,784,000 2,166,000
Male 595,000 704,000 881,000 1,181,000 1,615,000 1,936,000
Female 51,000 62,000 82,000 109,000 170,000 231,000
Hispanic 102,000 125,000 234,000 422,000 721,000 997,000
Male 94,000 116,000 217,000 392,000 664,000 911,000
Female 8,000 10,000 17,000 30,000 57,000 86,000
Note: Estimates were based on separate generation life tables that
incorporate first incarceration and mortality rates for each age
group. Estimates were rounded to the nearest 1,000. See Methodology
for estimation procedures.
*Excludes persons of Hispanic origin.
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These changes in the percents ever incarcerated by age reflect rising rates of first incarceration and the age of each of these birth cohorts when the increases occurred. In the future, the percents ever incarcerated will rise among older age groups as more recent cohorts experience the full impact of current levels of first incarceration rates throughout their lifetimes (figure 2).
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Figure 2
Younger age groups experience rising rates of imprisonment
Percent ever incarcerated
Age 1974 1986 1991 2001
15 0.0 0.0 0.0 0.0
16 0.0 0.0 0.1 0.0
17 0.1 0.1 0.2 0.2
18 0.2 0.2 0.4 0.5
19 0.3 0.5 0.7 0.8
20 0.5 0.7 1.0 1.1
21 0.6 0.9 1.1 1.5
22 0.7 1.0 1.4 1.8
23 0.8 1.2 1.5 2.2
24 0.9 1.3 1.7 2.4
25 0.9 1.4 1.8 2.7
26 1.0 1.5 2.0 2.9
27 1.1 1.6 2.1 3.1
28 1.1 1.6 2.2 3.3
29 1.2 1.7 2.2 3.4
30 1.2 1.7 2.3 3.5
31 1.2 1.8 2.3 3.6
32 1.3 1.8 2.3 3.7
33 1.3 1.8 2.3 3.8
34 1.3 1.8 2.3 3.8
35 1.3 1.8 2.3 3.9
36 1.4 1.8 2.3 3.9
37 1.4 1.7 2.3 3.9
38 1.4 1.7 2.3 3.8
39 1.4 1.7 2.2 3.8
40 1.4 1.7 2.2 3.7
41 1.5 1.7 2.1 3.6
42 1.5 1.7 2.1 3.6
43 1.5 1.7 2.0 3.5
44 1.5 1.7 2.0 3.4
45 1.5 1.7 1.9 3.4
46 1.5 1.7 1.9 3.3
47 1.5 1.7 1.9 3.2
48 1.5 1.7 1.9 3.1
49 1.5 1.7 1.9 3.0
50 1.5 1.7 1.9 2.8
51 1.5 1.7 1.9 2.7
52 1.5 1.7 1.8 2.6
53 1.5 1.6 1.8 2.5
54 1.5 1.6 1.8 2.4
55 1.5 1.6 1.8 2.3
56 1.5 1.6 1.8 2.3
57 1.5 1.6 1.8 2.2
58 1.5 1.6 1.7 2.2
59 1.5 1.6 1.7 2.1
60 1.5 1.6 1.7 2.1
61 1.5 1.6 1.7 2.0
62 1.5 1.6 1.6 2.0
63 1.5 1.6 1.6 2.0
64 1.5 1.6 1.6 2.0
65 1.5 1.6 1.6 1.9
66 1.5 1.6 1.6 1.9
67 1.5 1.6 1.6 1.8
68 1.5 1.6 1.6 1.8
69 1.5 1.6 1.6 1.8
70 1.5 1.6 1.6 1.7
71 1.5 1.5 1.6 1.7
72 1.5 1.5 1.6 1.7
73 1.5 1.5 1.6 1.7
74 1.5 1.5 1.6 1.6
75 1.5 1.5 1.6 1.6
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More males than females and more blacks and Hispanics than whites had ever served time in prison
Nearly 9 times as many men (5,037,000) as women (581,000) had ever been incarcerated in a State or Federal prison at yearend 2001. As a percentage of all persons ever confined in prison, women increased from 7.8% in 1974 to 10.3% in 2001.
At yearend 2001 nearly as many blacks (2,166,000) as whites (2,203,000) had ever served time in prison; Hispanics numbered about half of either group (997,000). Together, blacks (39%) and Hispanics (18%) constituted a majority of those who had ever served time in prison in 2001. Whites accounted for 39% of all those ever incarcerated in 2001, down from 51% in 1974.
Over the 27-year period, the share of those who are black and Hispanic among persons ever incarcerated increased. The number of Hispanics rose nearly 10-fold (up from 102,000 in 1974) and the number of blacks more than tripled (up from 646,000), while the number of whites more than doubled (up from 922,000). As a result, blacks rose from 36% to 39% of all persons ever incarcerated, while Hispanics rose from 6% to 18%.
Nearly 17% of adult black males had ever served time in prison
In 2001 an estimated 16.6% of adult black males were current or former State or Federal prisoners -- a rate that was twice that of Hispanic males (7.7%), and 6 times that of white males (2.6%) (table 5).
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Table 5. Percent of adult population ever incarcerated in a State or
Federal prison, by gender, race, and Hispanic origin, 1974-2001
Percent of adult population ever incarcerated in a State
or Federal prison
1974 1979 1986 1991 1997 2001
Gender
Male 2.3% 2.4% 2.8% 3.4% 4.3% 4.9%
Female 0.2 0.2 0.2 0.3 0.4 0.5
Race/Hispanic origin
White* 0.8% 0.8% 0.9% 1.1% 1.3% 1.4%
Male 1.4 1.5 1.7 1.9 2.3 2.6
Female 0.1 0.1 0.1 0.2 0.2 0.3
Black* 4.5% 4.6% 5.2% 6.2% 7.9% 8.9%
Male 8.7 8.9 9.9 12.0 15.0 16.6
Female 0.6 0.7 0.8 0.9 1.3 1.7
Hispanic 1.3% 1.4% 2.0% 2.7% 3.8% 4.3%
Male 2.3 2.6 3.6 4.9 6.7 7.7
Female 0.2 0.2 0.3 0.4 0.6 0.7
Note: Percents were based on intercensal resident population estimates
from the U.S. Census Bureau. See Methodology for data sources.
*Excludes persons of Hispanic origin.
U.S. adult resident population
1974 1979 1986 1991 1997 2001
Gender
Male 69,217,000 76,388,000 83,973,550 90,362,099 95,948,130 101,492,258
Female 76,133,000 84,072,000 91,913,080 97,620,652 103,173,604 108,715,643
Race/Hispanic origin
White* 120,878,496 132,166,671 140,455,378 145,134,029 149,184,485 153,174,207
Male 57,704,209 63,114,508 67,150,845 69,718,665 71,989,995 74,217,435
Female 63,173,779 69,055,203 73,304,533 75,415,364 77,194,490 78,956,773
Black* 14,406,407 16,544,671 18,682,074 20,687,638 22,627,733 24,466,606
Male 6,593,640 7,543,858 8,517,413 9,465,170 10,401,742 11,287,707
Female 7,813,782 8,999,844 10,164,661 11,222,468 12,225,991 13,178,900
Hispanic 7,998,062 8,854,010 11,956,854 15,677,988 19,181,910 22,949,502
Male 3,923,600 4,353,052 6,003,930 8,022,134 9,674,049 11,452,968
Female 4,074,628 4,500,532 5,952,924 7,655,854 9,507,861 11,496,534
Note: Because of estimation and other rounding procedures, some detail
may not add to totals and may not match precisely totals in other tables.
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Female rates, though significantly lower, reveal similar racial and ethnic disparities. Adult black females were nearly 2 1/2 times more likely than adult Hispanic females and 5 1/2 times more likely than adult white females to have ever served time in State or Federal prison.
Among adult residents in 2001, an estimated 1.7% of black females, 0.7% of Hispanic females and 0.3% of white females had ever been incarcerated in a prison.
Among both men and women who had ever been confined in prison in 2001, blacks outnumbered whites in each age category under age 45; whites outnumbered blacks in nearly every age category 45 or older (table 6). The percentage of blacks declined steadily among each older age group (dropping from 44% among those ages 18 to 24 to 29% among persons 65 or older). The percentage of Hispanics also declined among older age groups (dropping from 24% among those ages 18 to 24 to 8% among those age 65 or older). In contrast, at yearend 2001 the percentage white among all adults ever incarcerated increased from 27% of those ages 18 to 24 to 52% among persons age 65 or older.
----------------------------------------------------------------------
Table 6. Number ever incarcerated in a State or Federal prison, by
gender, race, Hispanic origin, and age, 2001
Number of adults ever incarcerated in a State or Federal prison,
by age--
18-24 25-34 35-44 45-54 55-64 65 or
older
Gender
Male 385,000 1,157,000 1,460,000 1,014,000 492,000 529,000
Female 24,000 129,000 205,000 118,000 47,000 59,000
Race/Hispanic origin
White* 112,000 391,000 628,000 497,000 271,000 304,000
Male 104,000 351,000 555,000 452,000 248,000 269,000
Female 8,000 41,000 73,000 45,000 23,000 35,000
Black* 181,000 567,000 681,000 406,000 162,000 169,000
Male 172,000 509,000 597,000 361,000 146,000 151,000
Female 9,000 58,000 84,000 45,000 16,000 18,000
Hispanic 99,000 295,000 309,000 181,000 69,000 46,000
Male 93,000 271,000 279,000 165,000 63,000 41,000
Female 6,000 24,000 3,0000 16,000 6,000 5,000
Note: Estimates were rounded to the nearest 1,000. See Methodology
for estimation procedures."
*Excludes persons of Hispanic origin.
----------------------------------------------------------------------
Regardless of gender, race or Hispanic origin, prevalence rates highest among persons age 35 to 44
Although there was wide variation by race, Hispanic origin, and gender, within each subgroup, persons ages 35 to 44 had the highest percents ever incarcerated in 2001. Among men, the percent ever incarcerated rose for each age group to a peak of 6.5% of those ages 35 to 44 and then declined to 3.1% of those age 65 or older (table 7).
----------------------------------------------------------------------
Table 7. Percent of adult population ever incarcerated in a State or
Federal prison, by gender, race, Hispanic origin, ang age, 2001
Percent of adult population ever incarcerated in a State
or Federal prison, by age--"
18-24 25-34 35-44 45-54 55-64 65 or older
Gender
Male 2.7% 6.0% 6.5% 5.3% 4.0% 3.1%
Female 0.2 0.7 0.9 0.6 0.3 0.2
Race/Hispanic origin
White* 0.6% 1.6% 2.0% 1.7% 1.4% 1.1%
Male 1.1 2.8 3.5 3.1 2.5 2.0
Female 0.1 0.3 0.5 0.3 0.2 0.2
Black* 4.4% 10.9% 12.1% 9.5% 6.7% 5.9%
Male 8.5 20.4 22.0 17.7 13.0 11.6
Female 0.4 2.1 2.8 1.9 1.1 0.9
Hispanic 2.2% 5.1% 5.8% 5.2% 3.6% 2.2%
Male 4.0 9.0 10.0 9.5 6.6 4.1
Female 0.3 0.8 1.1 0.9 0.6 0.3
Note: Percents were based on intercensal resident population
estimates from the U.S. Census Bureau. See Methodology for data
sources.
*Excludes persons of Hispanic origin.
U.S. adult resident population, 2001
18-24 25-34 35-44 45-54 55-64 65 or
older
Gender
Male 14,417,325 8,939,186 22,389,203 19,117,478 12,022,028 14,607,040
Female 13,795,256 19,089,714 22,555,935 19,879,361 13,119,592 20,275,786
Race/Hispanic origin
White* 18,303,498 24,885,780 31,782,158 29,517,823 19,800,209 28,884,741
Male 9,375,574 12,489,397 15,944,122 14,647,562 9,615,049 12,145,733
Female 8,927,925 12,396,383 15,838,036 14,870,261 10,185,160 16,739,009
Black* 4,076,908 5,196,820 5,624,914 4,297,967 2,409,671 2,860,327
Male 2,008,858 2,472,112 2,666,839 1,963,452 1,043,119 1,133,328
Female 2,068,051 2,724,708 2,958,076 2,334,515 1,366,552 1,726,999
Hispanic 4,394,592 5,737,009 5,334091 3,448,416 1,936,521 2,098,875
Male 2,299,849 2,940,171 2,734938 1,696,233 896,361 885,418
Female 2,094,743 2,796,838 2,599153 1,752,183 1,040,160 1,213,457
Note: Because of estimation and other rounding procedures, some
detail may not add to totals and may not match precisely totals
in other tables.
----------------------------------------------------------------------
There was a similar pattern among women, though the percents were lower than for men. An estimated 0.9% of women ages 35 to 44 had ever been in prison, compared to 0.2% for women ages 18 to 24 and age 65 or older.
When rates were estimated separately by race and Hispanic origin, the variations among age groups remained unchanged. In every gender and racial/ethnic group in 2001, the percent of ever having been incarcerated was lowest among the youngest group (those ages 18 to 24)and the oldest age group (age 65 or older).
Among persons ages 35 to 44, more than 22.0% of black males had ever been incarcerated in prison, over twice as high as Hispanic males (10.0%), and over 6 times higher than white males (3.5%). In this same age group, black women (2.8%) were over twice as likely as Hispanic women (1.1%), and nearly 6 times as likely as white women (0.5%) to have been in prison.
Impact of rising first incarceration rate varies by birth cohort
Persons born prior to 1940 were nearly unaffected by the rising first incarceration rates of the 1980's and 1990's. At younger ages (up to the age of 40), the prevalence rates at 5-year age intervals were the same for persons born in 1935 as in 1910 (table 8). The rising rates of first incarceration increased the prevalence of incarceration among those born in 1935 as they reached age 45. Similarly, the prevalence rates rose for those born in 1930 as they reached age 50.
----------------------------------------------------------------------
Table 8. Percent of adults ever incarcerated in a State or Federal
prison, by year of birth and age
Percent of adults ever incarcerated in a State or Federal prison, by age--
Year
born 20 25 30 35 40 45 50 55 60 65 70 75
1910 0.4% 0.9% 1.2% 1.3% 1.4% 1.5% 0.5% 1.5% 1.5% 1.5% 1.5% 1.5%
1915 0.4 0.9 1.2 1.3 1.4 1.5 1.5 1.5 1.5 1.5 1.5 1.6
1920 0.4 0.9 1.2 1.3 1.4 1.5 1.5 1.5 1.6 1.6 1.6 1.6
1925 0.4 0.9 1.2 1.3 1.4 1.5 1.5 1.6 1.6 1.6 1.6 1.6
1930 0.4 0.9 1.2 1.3 1.4 1.5 1.6 1.6 1.7 1.7 1.7 +1.7+
1935 0.4 0.9 1.2 1.3 1.4 1.6 1.7 1.8 1.8 1.9 +1.9 1.9+
1940 0.4 0.9 1.2 1.3 1.5 1.7 1.8 2.0 2.0 +2.1 2.1 2.1+
1945 0.4 0.9 1.2 1.4 1.7 1.9 2.1 2.3 +2.3 2.4 2.4 2.4+
1950 0.4 1.0 1.4 1.7 2.1 2.4 2.7 +2.8 2.9 2.9 2.9 2.9+
1955 0.5 1.1 1.7 2.2 2.7 3.2 +3.4 3.6 3.6 3.7 3.7 3.7+
1960 0.6 1.4 2.1 2.9 3.5 +4.0 4.3 4.4 4.4 4.5 4.5 4.5+
1965 0.7 1.7 2.8 3.7 +4.4 4.9 5.2 5.3 5.3 5.3 5.4 5.4+
1970 0.9 2.2 3.4 +4.4 5.1 5.6 5.8 5.9 6.0 6.0 6.0 6.0+
1975 1.1 2.6 +3.9 4.9 5.7 6.1 6.4 6.5 6.5 6.5 6.5 6.5+
1980 1.2 +2.7 4.0 5.0 5.7 6.2 6.4 6.5 6.6 6.6 6.6 6.6+
Note: Based on constant age-specific first incarceration rates after
2001 (bolded type--indicated with plus (+) signs).
----------------------------------------------------------------------
Among persons born after 1935, the effects of rising first incarceration rates occurred at increasingly younger ages. Persons born in 1955 were the first to record higher prevalence rates at all ages, compared to persons born in prior years. At age 45 the percent ever having been in prison reached 3.2% for persons born in 1955 -- more than double the percent at that age among persons born in 1930 or earlier.
The greatest rise occurred in the percents having been incarcerated among the most recent cohorts. For persons born in 1975, 2.6% had been to prison by age 25, nearly equal to the percent among persons born in 1950 who had been to prison by age 50 (2.7%).
Projections for years after 2001 indicate the percent ever incarcerated will rise at an accelerated pace. If rates of first incarceration remain at 2001 levels, 5.4% of persons born in 1965 are expected to have gone to prison by age 75, more than three times the 1.7% of persons born in 1930.
The projected rise in the percent ever incarcerated slows among persons in later cohorts. Of those born in 1970, 6.0% are expected to have been in prison by age 75, compared to 6.5% of those born in 1975, and 6.6% of those born in 1980.
3.4% of adults projected to have served time in prison by 2010
The prevalence of having been to prison will rise among the U.S. adult population as more birth cohorts experience the full impact of current levels of first incarceration. Assuming that current age-specific rates of first incarceration remain at 2001 levels, the number of adults having ever served time in prison is projected to rise to 7.7 million by 2010. A total of 3.4% of the adult population (1 in 29 persons age 18 or older) is expected to have served time in prison.
----------------------------------------------------------------------
Projected prevalence of having gone to State or Federal prison*
Year Number Percent
2001 5,618,000 2.7%
2002 5,856,000 2.8
2003 6,095,000 2.8
2004 6,332,000 2.9
2005 6,568,000 3.0
2006 6,804,000 3.1
2007 7,040,000 3.1
2008 7,275,000 3.2
2009 7,511,000 3.3
2010 7,745,000 3.4
*Based on prevalence estimates for exact ages through 2001 and
projections for exact ages from 2002 through 2010. See
Methodology for estimation procedures.
Projected adult
Year resident population
2001 210,207,901
2002 212,427,944
2003 214,688,268
2004 216,918,713
2005 219,144,044
2006 221,409,946
2007 223,754,193
2008 226,155,771
2009 228,520,785
2010 230,792,746
----------------------------------------------------------------------
Lifetime likelihood estimates of going to prison differ from current prevalence estimates
The lifetime likelihood of going to prison is an estimate of the percentage of all persons in a birth cohort expected to go to prison over the course of a lifetime. In contrast, the prevalence of ever having gone to prison is an estimate of the percentage who have ever gone to prison among just the surviving members of all birth cohorts over a specific period.
Estimates of the lifetime likelihood of going to prison project the percentage of persons at birth expected to go to prison, if the entire cohort were subject to a fixed set of rates of first admission to prison and mortality over an entire lifetime. In calculating these estimates, incarceration and mortality rates are fixed at the time of "birth" of the cohort.
Standard life table techniques were used to prepare estimates of the lifetime likelihood of going to prison based on rates of first incarceration during a 12-month period derived from inmate surveys conducted in 1974, 1979, 1986, 1991, and 1997. (See Lifetime Likelihood of Going to State or Federal Prison, NCJ 160092, March 1997, for a description of previous estimates.)
6.6% of persons born in 2001 will go to prison, if current rates of first incarceration remain unchanged
If rates of first incarceration and mortality in 2001 remain unchanged, nearly 1 in 15 persons born in 2001 (6.6%) will go to State or Federal prison during their lifetime (figure 3).
----------------------------------------------------------------------
Figure 3
The lifetime chances of going to prison reached 6.6% in 2001,
up from 1.9% in 1974
Cumulative percent of U.S. residents
going to prison
Age 1974 1986 1991 2001
13 0.0 0.0 0.0 0.0
14 0.0 0.0 0.0 0.0
15 0.0 0.0 0.0 0.0
16 0.0 0.0 0.1 0.0
17 0.1 0.1 0.2 0.2
18 0.2 0.2 0.4 0.4
19 0.3 0.4 0.7 0.8
20 0.5 0.7 1.1 1.1
21 0.6 0.9 1.3 1.5
22 0.7 1.1 1.6 1.8
23 0.9 1.2 1.9 2.1
24 1.0 1.4 2.1 2.4
25 1.1 1.5 2.4 2.6
26 1.1 1.7 2.6 2.9
27 1.2 1.8 2.8 3.1
28 1.3 1.9 3.0 3.4
29 1.4 2.0 3.2 3.6
30 1.4 2.1 3.3 3.9
31 1.5 2.2 3.5 4.1
32 1.5 2.3 3.6 4.3
33 1.5 2.4 3.7 4.5
34 1.6 2.5 3.9 4.7
35 1.6 2.5 4.0 4.9
36 1.6 2.6 4.1 5.1
37 1.7 2.7 4.2 5.2
38 1.7 2.7 4.3 5.4
39 1.7 2.8 4.4 5.5
40 1.7 2.8 4.5 5.6
41 1.7 2.9 4.5 5.7
42 1.8 2.9 4.6 5.8
43 1.8 2.9 4.6 5.9
44 1.8 3.0 4.7 6.0
45 1.8 3.0 4.7 6.1
46 1.8 3.0 4.7 6.1
47 1.8 3.1 4.8 6.2
48 1.8 3.1 4.8 6.2
49 1.8 3.1 4.9 6.2
50 1.8 3.1 4.9 6.3
51 1.9 3.2 4.9 6.3
52 1.9 3.2 4.9 6.4
53 1.9 3.2 5.0 6.4
54 1.9 3.2 5.0 6.4
55 1.9 3.2 5.0 6.4
56 1.9 3.2 5.0 6.4
57 1.9 3.2 5.1 6.5
58 1.9 3.2 5.1 6.5
59 1.9 3.2 5.1 6.5
60 1.9 3.3 5.1 6.5
61 1.9 3.3 5.1 6.5
62 1.9 3.3 5.1 6.5
63 1.9 3.3 5.1 6.5
64 1.9 3.3 5.1 6.5
65 1.9 3.3 5.1 6.6
66 1.9 3.3 5.1 6.6
67 1.9 3.3 5.2 6.6
68 1.9 3.3 5.2 6.6
69 1.9 3.3 5.2 6.6
70 1.9 3.3 5.2 6.6
71 1.9 3.3 5.2 6.6
72 1.9 3.3 5.2 6.6
73 1.9 3.3 5.2 6.6
74 1.9 3.3 5.2 6.6
75 1.9 3.3 5.2 6.6
----------------------------------------------------------------------
Unlike the yearend 2001 prevalence rate of 2.7%, which represents the cumulative result of the past incarceration experiences of the living adult population, the lifetime likelihood is a hypothetical projection of the future if a birth cohort were to experience a fixed set of rates of first incarceration and mortality over a lifetime.
Between 1974 and 2001, the lifetime chances of going to State or Federal prison for U.S. residents overall in- creased from 1.9% to 6.6%. Each estimate summarized the effects of first incarceration and mortality during a 12-month period in 1974, 1986, 1991, and 2001. The estimates do not take into account changes in rates of first incarceration or mortality that occur after the "birth" of the hypothetical cohort. As a result of steadily rising rates of first incarceration from 1974 to 2001, the lifetime chances of going to prison for persons born in 1974 will be higher than 1.9%. Based on rates of first incarceration through 2001, an estimated 2.6% of persons born in 1975 had already been incarcerated by age 25.
6 times higher lifetime chance of going to prison in 2001 for men than for women
Based on rates of first incarceration in 2001, the lifetime chances for men of going to prison are 6 times greater than those for women (table 9). A male has a 11.3% (or 1 in 9) chance in his life-time of going to prison, while a female has a 1.8% (or 1 in 56) chance. An estimated 9.6% of men and 1.5% of women are expected to go to prison by age 40, as first incarceration rates riserapidly, then decline with advancing age (figures 4 and 5).
----------------------------------------------------------------------
Table 9. Lifetime chances of going to State or Federal prison for
the first time, by gender, race, and Hispanic orign, 1974-2001
Percent of resident population expected to go to
State or Federal prison for the first time, by
year--
1974 1979 1986 1991 1997 2001
Gender
Male 3.6% 4.1% 6.0% 9.1% 10.6% 11.3%
Female 0.3 0.4 0.6 1.1 1.5 1.8
Race/Hispanic origin
White* 1.2% 1.4% 2.0% 2.5% 3.1 3.4%
Male 2.2 2.5 3.6 4.4 5.4 5.9
Female 0.2 0.2 0.3 0.5 0.7 0.9
Black* 7.0% 7.2% 9.3% 16.5% 17.7 18.6%
Male 13.4 13.4 17.4 29.4 31.0 32.2
Female 1.1 1.4 1.8 3.6 4.9 5.6
Hispanic 2.2% 3.3% 6.2% 9.5% 10.5 10.0%
Male 4.0 6.0 11.1 16.3 18.0 17.2
Female 0.4 0.4 0.9 1.5 2.2 2.2
Note: Percents represent the chances of being admitted to State or
Federal prison during a lifetime.
Estimates were obtained by applying age-specific first incarceration
and mortality rates for each group to a hypothetical population of
100,000 births. See Methodology.
*Excludes persons of Hispanic origin.
----------------------------------------------------------------------
----------------------------------------------------------------------
Figure 4
+Nearly 1 in 3 black males likely to go to prison
based on constant 2001 incarceration rates+
Cumulative percent of males going to prison
Age Total White Black Hispanic
13 0.0 0.0 0.0 0.0
14 0.0 0.0 0.0 0.0
15 0.0 0.0 0.0 0.0
16 0.1 0.0 0.3 0.1
17 0.3 0.1 1.3 0.3
18 0.8 0.3 3.0 1.0
19 1.4 0.5 4.9 2.1
20 2.1 0.8 6.7 3.0
21 2.7 1.2 8.2 4.1
22 3.3 1.5 9.8 5.0
23 3.8 1.6 11.8 5.5
24 4.3 1.8 13.7 6.0
25 4.7 2.1 15.1 6.7
26 5.2 2.3 16.9 7.2
27 5.6 2.5 18.0 7.9
28 6.1 2.8 19.3 8.6
29 6.5 3.0 20.2 9.3
30 6.9 3.3 21.0 10.3
31 7.2 3.4 22.2 10.8
32 7.6 3.6 23.2 11.0
33 7.9 3.8 23.8 11.5
34 8.1 4.0 24.5 12.0
35 8.4 4.1 25.2 12.5
36 8.7 4.3 26.1 13.0
37 9.0 4.4 27.2 13.2
38 9.2 4.6 27.7 13.4
39 9.4 4.7 28.2 13.8
40 9.6 4.7 28.6 14.1
41 9.7 4.9 29.1 14.4
42 9.9 5.0 29.5 14.8
43 10.1 5.1 30.0 15.2
44 10.3 5.2 30.3 15.4
45 10.4 5.2 30.7 15.6
46 10.5 5.3 30.8 15.8
47 10.6 5.3 31.1 15.9
48 10.6 5.4 31.2 15.9
49 10.7 5.5 31.3 16.1
50 10.7 5.5 31.4 16.1
51 10.8 5.5 31.5 16.4
52 10.9 5.6 31.6 16.5
53 10.9 5.7 31.7 16.6
54 11.0 5.7 31.8 16.7
55 11.0 5.7 31.9 16.8
56 11.0 5.7 32.0 16.8
57 11.1 5.7 32.0 16.9
58 11.1 5.8 32.0 16.9
59 11.1 5.8 32.0 17.0
60 11.1 5.8 32.0 17.1
61 11.2 5.8 32.1 17.1
62 11.2 5.8 32.2 17.1
63 11.2 5.8 32.2 17.1
64 11.2 5.8 32.2 17.2
65 11.2 5.9 32.2 17.2
66 11.2 5.9 32.2 17.2
67 11.2 5.9 32.2 17.2
68 11.2 5.9 32.2 17.2
69 11.2 5.9 32.2 17.2
70 11.2 5.9 32.2 17.2
71 11.3 5.9 32.2 17.2
72 11.3 5.9 32.2 17.2
73 11.3 5.9 32.2 17.2
74 11.3 5.9 32.2 17.2
75 11.3 5.9 32.2 17.2
----------------------------------------------------------------------
----------------------------------------------------------------------
Figure 5
1 in 19 black females compared with 1 in 118 white
females likely to go to prison
Cumulative percent of females
going to prison
Age Total White Black Hispanic
13 0.0 0.0 0.0 0.0
14 0.0 0.0 0.0 0.0
15 0.0 0.0 0.0 0.0
16 0.0 0.0 0.0 0.0
17 0.0 0.0 0.1 0.1
18 0.1 0.0 0.1 0.1
19 0.1 0.0 0.2 0.1
20 0.1 0.1 0.3 0.2
21 0.2 0.1 0.4 0.3
22 0.2 0.1 0.5 0.3
23 0.3 0.1 0.7 0.5
24 0.3 0.2 0.9 0.5
25 0.4 0.2 1.0 0.6
26 0.5 0.2 1.4 0.6
27 0.5 0.3 1.7 0.7
28 0.6 0.3 1.8 0.8
29 0.7 0.4 2.1 0.9
30 0.8 0.4 2.3 1.1
31 0.9 0.4 2.7 1.1
32 1.0 0.5 3.0 1.2
33 1.1 0.5 3.3 1.3
34 1.1 0.6 3.5 1.4
35 1.2 0.6 3.7 1.5
36 1.3 0.6 4.0 1.6
37 1.3 0.7 4.2 1.7
38 1.4 0.7 4.4 1.7
39 1.4 0.7 4.6 1.8
40 1.5 0.8 4.7 1.8
41 1.5 0.8 4.9 1.9
42 1.6 0.8 4.9 1.9
43 1.6 0.8 5.1 1.9
44 1.6 0.8 5.2 1.9
45 1.6 0.8 5.3 1.9
46 1.7 0.8 5.4 2.0
47 1.7 0.8 5.4 2.1
48 1.7 0.8 5.4 2.1
49 1.7 0.8 5.5 2.1
50 1.7 0.9 5.5 2.1
51 1.7 0.9 5.5 2.1
52 1.7 0.9 5.5 2.1
53 1.7 0.9 5.5 2.2
54 1.7 0.9 5.5 2.2
55 1.7 0.9 5.5 2.2
56 1.7 0.9 5.5 2.2
57 1.7 0.9 5.5 2.2
58 1.7 0.9 5.6 2.2
59 1.7 0.9 5.6 2.2
60 1.7 0.9 5.6 2.2
61 1.8 0.9 5.6 2.2
62 1.8 0.9 5.6 2.2
63 1.8 0.9 5.6 2.2
64 1.8 0.9 5.6 2.2
65 1.8 0.9 5.6 2.2
66 1.8 0.9 5.6 2.2
67 1.8 0.9 5.6 2.2
68 1.8 0.9 5.6 2.2
69 1.8 0.9 5.6 2.2
70 1.8 0.9 5.6 2.2
71 1.8 0.9 5.6 2.2
72 1.8 0.9 5.6 2.2
73 1.8 0.9 5.6 2.2
74 1.8 0.9 5.6 2.2
75 1.8 0.9 5.6 2.2
----------------------------------------------------------------------
In 2001, the chances of going to prison were highest among black males (32.2%)and Hispanic males (17.2%) and lowest among white males (5.9%). The lifetime chances of going to prison among black females (5.6%) were nearly as high as for white males. Hispanic females (2.2%) and white females (0.9%) had much lower chances of going to prison.
As a result of changes in first incarceration and mortality rates between 1974 and 2001, black males experienced a greater increase in the chances of going to prison over the course of a lifetime than any other group (from 13.4% in 1974 to 32.2% in 2001). Hispanic males experienced the second largest increase (from 4.0% in 1974 to 17.2% in 2001). White males experienced a smaller increase (from 2.2% in 1974 to 5.9% in 2001).
The lifetime chances of going to prison increased more rapidly for black females (from 1.1% in 1974 to 5.6% in 2001) than for white males. Hispanic females (from 0.4% in 1974 to 2.2% in 2001) and white females (from 0.2% in 1974 to 0.9% in 2001) had smaller increases in their lifetime chances of going to prison.
At every age men have higher chances of going to prison than women, and blacks and Hispanics have higher chances than whites. Based on current rates of first incarceration, an estimated 6.7% of black males will enter State or Federal prison by the time they are age 20, compared to 3.0% of Hispanic males and 0.8% of white males.
Methodology
Life table techniques
Life table techniques previously used to illustrate the implications of prevailing incarceration rates in 1991 have been extended to model the incarceration experience of actual generations of U.S. residents. (See Lifetime Likelihood of Going to State or Federal Prison, NCJ 160092, March 1997.) These generation life tables provide the data needed to estimate the number of living persons who have ever been incarcerated.
A generation life table traces a birth cohort of 100,000 persons through their entire lives, subjecting them to the observed age-specific mortality and incarceration rates which they encountered in each subsequent calendar year of life. The procedure is known as a double-decrement life table because there are two forms of exit from the initial 100,000 birth cohort. The procedure yields estimates of the number of persons in the birth cohort who are incarcerated for the first time each year or who die.
At each year of age, the estimated number of living persons ever incarcerated is equal to the number of persons identified as a prisoner for the first time that year plus the number of surviving members of the birth cohort who were prisoners in prior years. The age-specific prevalence rate for members of the birth cohort is obtained by dividing the surviving number of persons ever incarcerated by the number of members of the 100,000 birth cohort who have survived to the current age (including both those never incarcerated and those ever incarcerated).
----------------------------------------------------------------------
Appendix table 1. Calculating the number of persons ever
incarcerated in State or Federal prison, 2001
Prevalence of ever going to prison, 2001
U.S. resident
population,
Year of Age in 2000[a] Percent[b] Number[c]
birth 2001 (1) (2) (3)
1983-1901 18 or older 210,207,901 2.673 5618000
2001-1988 0-13 56,557,383 0.000 0
1987 14 4,063,179 0.000 0
1986 15 4,071,585 0.000 0
1985 16 4,083,677 0.036 1,000
1984 17 4,117,221 0.174 7,000
1983 18 4,022,021 0.453 18,000
1982 19 4,327,407 0.794 34,000
1981 20 4,264,552 1.146 49,000
1980 21 4,140,721 1.510 63,000
1979 22 3,935,452 1.845 73,000
1978 23 3,756,052 2.155 81,000
1977 24 3,766,377 2.428 91,000
1976 25 3,643,765 2.676 97,000
1975 26 3,572,926 2.911 104,000
1974 27 3,579,019 3.082 110,000
1973 28 3,386,129 3.252 110,000
1972 29 3,876,011 3.360 130,000
1971 30 3,989,205 3.506 140,000
1970 31 4,032,301 3.584 145,000
1969 32 3,993,019 3.689 147,000
1968 33 3,899,282 3.764 147,000
1967 34 4,057,246 3.824 155,000
1966 35 4,110,892 3.857 159,000
1965 36 4,182,093 3.895 163,000
1964 37 4,416,302 3.887 172,000
1963 38 4,265,440 3.840 164,000
1962 39 4,826,377 3.778 182,000
1961 40 4,725,422 3.692 174,000
1960 41 4,634,371 3.641 169,000
1959 42 4,597,285 3.563 164,000
1958 43 4,518,648 3.507 158,000
1957 44 4,668,310 3.439 161,000
1956 45 4,464,137 3.356 150,000
1955 46 4,227,667 3.267 138,000
1954 47 4,192,570 3.180 133,000
1953 48 3,863,432 3.068 119,000
1952 49 4,131,847 2.953 122,000
1951 50 3,838,209 2.819 108,000
1950 51 3,595,173 2.688 97,000
1949 52 3,516,992 2.584 91,000
1948 53 3,497,820 2.475 87,000
1947 54 3,668,994 2.397 88,000
1946 55 3,180,818 2.341 74,000
1945 56 2,746,790 2.280 63,000
1944 57 2,788,492 2.220 62,000
1943 58 2,665,273 2.173 58,000
1942 59 2,710,967 2.131 58,000
1941 60 2,398,614 2.086 50,000
1940-1931 61-70 19,778,402 ... 377,000
1930-1901 71 or older 23,755,091 ... 384,000
[a] The number of U.S. residents on December 31, 2001, by age, were
based on projections for July 1, 2000, and July 1, 2001.
(See Projections of the Resident Population by Age, Sex,, Race and
Hispanic Origin: 1999 to 2100, U.S. Census Bureau, NP-D1-A, middle
series.) The data were adjusted for the undercount in the 1990
decennial census.
[b] Based on separate generation life tables starting in the year of
birth of the persons at each year of age. (See Appendix tables 2
and 3 for calculations for selected years of birth.)
[c] Estimates were calculated by multiplying column (1) by column (2)
and rounded to the nearest 1,000.
... Not shown, because all calculations were based on rates for single
years of age.
----------------------------------------------------------------------
To model the incarceration experience of the adult resident population in 2001, a separate generation life table was needed for each birth cohort born from 1901 to 1983. For example, of those born in 1980 and alive in 2001, an estimated 1.510% had ever gone to prison (Appendix table 1, column 2). Multiplying by 4,140,721 U.S. residents age 21 in 2001 (column 1), produced an estimate of 63,000 persons, age 21 in 2001, who had ever been incarcerated (column 3).
Similarly, the generation life table for the 1970 birth cohort produced an estimated prevalence of 3.584% among those age 31 in 2001. Multiplying by 4,032,301 U.S. residents age 31 in 2001 resulted in an estimated 145,000 persons age 31 in 2001 who had ever been incarcerated. The estimated 5,618,000 adults ever incarcerated in 2001 was obtained by summing the number of persons ever incarcerated, age 18 or older. Dividing by the adult resident population of 210,207,901 yielded an estimated prevalence of ever having gone to prison of 2.673% in 2001.
Estimating prevalence of imprisonment in the United States
To illustrate the application of generation life table techniques resulting in the 1.510% rate of ever having gone to prison among persons born in 1980, consider the following calculations:
1. Estimates of the number of persons in a population of 100,000 born in 1980 who died during each age interval were obtained by multiplying the age-specific mortality rate (Appendix table 2, column 2) by the number of persons alive and not previously incarcerated at each age (column 1).
* For example, among persons who reached age 21 without having been previously incarcerated, a total of 92 were estimated to have died (column 3) before reaching age 22 (that is, 96,607 times the mortality rate of 0.000955).
2. The number of persons in the 1980 cohort who were at risk to incarceration during an age interval was then calculated by subtracting the number dying from the number of persons who were alive and not previously incarcerated at the beginning of the age interval (column 1 minus column 3).
* An estimated 96,515 of the persons who survived to age 21 without being incarcerated were at risk to first incarceration at age 21.
3. The number of persons in the original 100,000 population estimated to have been admitted to prison at each age (column 5) was then obtained by multiplying the age-specific first admission rates (column 4)by the number of persons alive and not previously incarcerated.
* Among persons born in 1980 who had not been previously incarcerated by age 21, 343 were estimated to have been incarcerated before they reached age 22 (that is, 96,515 times the first incarceration rate of .003557).
4. The number of living persons at each age who had ever gone to prison was then calculated by summing the number going to prison for the first time during that year of age (column 5) plus the number of members of the 1980 birth cohort who previously went to prison and survived until the next year of age (column 6 times the survival rate, not shown).
* Of the 1,132 persons who had gone to prison and reached age 20, 1,131 survived to reach age 21. An additional 343 persons were expected to be incarcerated for the first time before reaching age 22 (for a cumulative total of 1,474).
5. The percent of persons at each specific age who had ever gone to prison (column 7) was then calculated by dividing the number of persons who had ever gone to prison and were still alive (column 6) by all persons who were still alive (including persons never incarcerated plus ever incarcerated).
* Among persons age 21, the prevalence rate was 1.510%, obtained by dividing 1,474 (column 6) by 97,646 (column 1 minus columns 3 and 5, plus 1,474), times 100%.
Prevalence rates for other birth cohorts were calculated using similar procedures. For example, to estimate the percent of persons age 31 in 2001 who had ever gone to prison, the calculations were applied to the 1970 birth cohort. However, the rates of first incarceration (column 4) and mortality (column 2) used in the calculations were unique to the birth cohort. (Note the differences between Appendix tables 2 and 3.)
----------------------------------------------------------------------
+Appendix table 2. Estimating the prevalence of imprisonment in the
U.S. population for persons born in 1980+
Population of 100,000 births, 1980, reduced by mortality and
incarceration in each successive year of age
Number alive
and not Rate of first Surviving
incarcerated admission to Expected cumulative
at beginning Number Expected State or number of number of
Age at of age dying per number of Federal prison first first Prevalence
first interval 100,000 deaths[a] per 100,000 admissions[b] admissions[c] percent[d]
admission Year (1) (2) (3) (4) (5) (6) (7)
0-13 1980-93 100,000 ... 1,732 0 0 0 0.000%
14 1994 98,268 44 43 1 1 1 0.001
15 1995 98,224 57 56 5 5 6 0.006
16 1996 98,163 73 72 39 38 44 0.045
17 1997 98,053 84 83 135 132 176 0.180
18 1998 97,838 93 91 283 277 453 0.462
19 1999 97,470 93 91 346 337 789 0.806
20 2000 97,043 94 91 355 344 1132 1.158
21 2001 96,607 96 92 356 343 1474 1.510
Note: Calculations for ages 0 to 13 were based on data for each
single year of age and then grouped for presentation.
... Not shown, because calculations were based on rates for single
years of age.
[a] To estimate the number expected to die at each year of age,
age-specific mortality rates(column 2) were multiplied by the number
of persons alive and not previously incarcerated (column 1).
[b] To estimate the number expected to go to prison at each year of
age, age-specific first admission rates (column 4) were multiplied
by the number of persons surviving (column 1 minus column 3).
[c] To estimate the surviving number of first admissions, the number
of first admissions from the x-th year of age (column 5) were added
to the number of surviving first admissions from the x-1 year of age.
Mortality rates for ex-prisoners by age were based on mortality rates
in the general population and adjusted to reflect higher ex-prisoner
mortality.
[d]To estimate the prevalence percent, this procedure was followed.
The surviving number of persons ever incarcerated (column 6) was
divided by the total number of surviving persons never incarcerated
(column 1 minus both columns 3 and 5) and persons ever incarcerated
(column 6), times 100%.
----------------------------------------------------------------------
----------------------------------------------------------------------
Appendix table 3. Estimating the prevalence of imprisonment in the
U.S. population for persons born in 1970
Population of 100,000 births, 1970, reduced by mortality and
incarceration in each successive year of age
Number alive Rate of first
and not admission Surviving
incarcerated to State Expected cumulative
at beginning Number Expected or Federal number of number of
of age dying per number of prison per first first Prevalence
Age at first interval 100,000 deaths[a] 100,000 admissions[b] admissions[c] percent[d]
admission Year (1) (2) (3) (4) (5) (6) (7)
0-13 1970-83 100,000 ... 2,099 0 0 0 0.000%
14 1984 97,901 49 48 1 1 1 0.001
15 1985 97,852 62 61 0 0 1 0.001
16 1986 97,791 73 71 24 23 24 0.025
17 1987 97,697 86 84 74 73 97 0.099
18 1988 97,539 96 94 186 181 278 0.285
19 1989 97,265 102 99 265 258 535 0.549
20 1990 96,907 107 103 331 320 855 0.878
21 1991 96,484 110 107 266 257 1,110 1.142
22 1992 96,121 113 109 305 293 1,402 1.444
23 1993 95,719 111 106 272 260 1,660 1.711
24 1994 95,353 108 103 279 266 1,924 1.985
25 1995 94,984 104 99 230 218 2,139 2.210
26 1996 94,668 100 94 232 219 2,356 2.436
27 1997 94,354 100 94 217 205 2,558 2.648
28 1998 94,055 97 92 257 241 2,796 2.897
29 1999 93,722 102 95 218 204 2,997 3.108
30 2000 93,422 104 97 275 257 3,250 3.374
31 2001 93,068 110 102 218 203 3,448 3.584
Note: Calculations for ages 0 to 13 were based on data for each
single year of age and then grouped for presentation.
... Not shown, because calculations were based on rates for
single years of age.
[a] To estimate the number expected to die at each year of age,
age-specific mortality rates(column 2) were multiplied by the number
of persons alive and not previously incarcerated (column 1).
[b] To estimate the number expected to go to prison at each year of
age, age-specific first admission rates (column 4) were multiplied
by the number of persons surviving (column 1 minus column 3).
[c] To estimate the surviving number of first admissions, the number
of first admissions from the x-th year of age (column 5) were added
to the number of surviving first admissions from the x-1 year of age.
Mortality rates for ex-prisoners by age were based on mortality rates
in the general population and adjusted to reflect higher ex-prisoner
mortality.
[d] To estimate the prevalence percent, this procedure was followed.
The surviving number of persons ever incarcerated (column 6) was
divided by the total number of surviving persons never incarcerated
(column 1 minus both columns 3 and 5) and persons ever incarcerated
(column 6), times 100%.
----------------------------------------------------------------------
Limitations
1. The data in this report are restricted to incarcerations in State or Federal prison. Excluded are prior incarcerations in local jails and juvenile facilities because of the lack of data needed to estimate the number of first admissions to these forms of correctional supervision.
2. Estimates of the number of first admissions are subject to sampling and nonsampling errors. Because the numbers of first admissions are based on a sample rather than a complete enumeration, the estimated number of first admissions may vary depending on the size of the estimate and the base population for each demographic group.
Nonsampling error can be attributed to many sources, such as nonresponse, differences in interpretation of questions, recall difficulties, and processing errors. Among inmates, the number of first admissions may be slightly overestimated because of underreporting of criminal histories. The full extent of nonsampling error is unknown.
3. No comparable inmate survey was conducted prior 1974 to enable the calculation of first incarceration rates prior to this date. First incarceration rates in 1970 and earlier were estimated to be 80% of each age-specific rate of first incarceration in 1974.
If first incarceration rates in 1970 and earlier had averaged 90% of each age-specific first incarceration rate in 1974, the estimated number of adults alive in 2001 who had ever gone to prison would have been 1.9% higher (5,723,000). Alternatively, if earlier first incarceration rates had averaged 70% of 1974 rates, the estimated number of persons ever to have been incarcerated in 2001 would have been-1.9% lower (5,513,000).
4. Mortality rate schedules for prisoners were not available. Compared with the general population, mortality rates for prisoners were estimated to be 20% higher for adults under age 65, and the same for those age 65 and older. The estimate was based on the lower overall educational attainment of prisoners, and longitudinal studies documenting the relationship between mortality and educational attainment.
If mortality rates for adults ever incarcerated, under age 65 were instead 40% higher than that of the general population, the estimated prevalence of ever having gone to prison in 2001 would be 5,567,000 (-0.9% less). If mortality rates for prisoners had been equal to that of the general population, the estimated prevalence would have been 0.9% higher in 2001 (5,670,000).
5. Comparable mortality rates prior to 1976 were not available. However, there is minimal effect of declining mortality rates since 1900 on the estimated number of persons ever incarcerated. Prevalence rates are only affected to the extent that there may have been a different decline in mortality among those ever incarcerated (the numerator) compared with all surviving members of a birth cohort (the denominator). Furthermore, prevalence rates were applied to estimates of the U.S. resident population (which fully reflect declines in mortality).
6. Age-specific incarceration rates do not incorporate a forecast of future rates of imprisonment, which may be affected by changes in criminal behavior, law enforcement, and in sentencing policies. Consequently, the lifetime likelihood of incarceration, 2001, and projected prevalence rates for 2002 and beyond may be different.
A fuller description of the methodological techniques used in preparing this report is available upon request from the author.
The Bureau of Justice Statistics is the statistical agency of the U.S. Department of Justice. Lawrence A. Greenfeld is director. BJS Special Reports address a specific topic in depth from one or many data sets that cover many topics.
Thomas P. Bonczar wrote this report, under the supervision of Allen J. Beck. Tom Hester and Carolyn C. Williams edited the report. Jayne E. Robinson administered final production.
August 2003, NCJ 197976
This report in portable document format and in ASCII, its tables, and related statistical data are available at the BJS World Wide Web Internet site: http://www.ojp.usdoj.gov/bjs/
askbjs AT ojp.usdoj.gov
(202) 307-0765
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