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December 29, 2016
BJS releases three big reports on correctional populations throughout the United States
Via email today I received news of and links to a bunch of big data reports from the Bureau of Justice Statistics (which is part of the Office of Justice Programs at the U.S. Department of Justice). Here are the titles, links and descriptions of these notable new publications:
This report presents statistics on persons supervised by adult correctional systems in the United States at yearend 2015, including persons supervised in the community on probation or parole and those incarcerated in state or federal prison or local jail. The report describes the size and change in the total correctional population during 2015. Appendix tables provide statistics on other correctional populations and jurisdiction-level estimates of the total correctional population by correctional status and sex for selected years.
This report presents final counts of prisoners under the jurisdiction of state and federal correctional authorities at yearend 2015, including admissions, releases, noncitizen inmates, and inmates age 17 or younger. The report describes prisoner populations by—
- most serious offense
- demographic characteristics.
Selected findings on prison capacity and prisoners held in private prisons, local jails, and the U.S. military and territories are also included. Findings are based on data from BJS's National Prisoner Statistics program, which collects data from state departments of correction and the Federal Bureau of Prisons.
This report presents information on changes in the jail inmate population between 2000 and 2015 by—
- demographic characteristics
- conviction status
- average daily population
- rated capacity of local jails
- percent of capacity occupied.
It also includes statistics, by jurisdiction size, on changes in the number of inmates, admissions, and weekly turnover rate from 2014 to 2015. Estimates and standard errors were based on BJS's Annual Survey of Jails.
December 29, 2016 at 05:43 PM | Permalink
The data collected here is useful for a high level overview but it is disappointedly lacking in detail.
Posted by: Me | Dec 29, 2016 7:02:09 PM
I agree with the previous comment that these data are presented in a very poor way for further analysis, and the BJS website does not make the raw data easy to get to.
The big story missed in these reports is the astonishing shift in age distribution of inmates. There has been a huge decline in incarceration rates for the youngest age groups, and a continuing increase for the older. This has been going on for at least a decade.
To dig this out someone would have to go year-by-year through the reports and extract the age distribution data, and then re-plot it. This is made even more difficult as the formatting and categories change over time, preventing automation.
Posted by: Boffin | Dec 30, 2016 1:11:54 PM