This Report "presents data on prisoners under jurisdiction of federal or state correctional authorities on December 31, 2008, collected from the National Prisoner Statistics series. This annual report compares changes in the prison population during 2008 to changes from yearend 2000 through yearend 2007. These are the only comprehensive national-level data on prison admissions and releases. Findings cover data on decreasing growth in state and federal prisons through declining admissions and increasing releases; imprisonment rates for prisoners sentenced to more than 1 year by jurisdiction; the number of males and females in prison; age, race, and gender distributions; the number of inmates in custody in state and federal prison and local jails; and custody incarceration rates. The report also includes the count for inmates held within facilities operated by and for the military, U.S. territories, Indian country, Immigration and Customs Enforcement (ICE), and juvenile authorities."
United States Bureau of Justice Statistics: http://bjs.ojp.usdoj.gov/