In 2012, the National Prisoner Statistics Program estimated the U.S. prison population had declined for the third consecutive year. By yearend 2012, 1.5 million inmates were under correctional supervision, down from 1.6 million in 2009.

At the local level, however, the jail inmate population increased by 1.2 percent (or 8,923 inmates) between midyear 2011 and midyear 2012 after three years of decline. During the same time period, local jails admitted an estimated 11.6 million people.

Learn more: BJS Bulletin: Prisoners in 2012 — Advance Counts (pdf, 17 pages

The number of men and women under correctional supervision remains a key area of concern and research for NIJ. As the research and evaluation arm of the Department of Justice, NIJ is committed to empirically exploring issues of interest for the field of corrections.

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Date Modified: March 17, 2014