The National Corrections Reporting Program (NCRP) collects offender-level administrative data annually on prison admissions and releases, and yearend custody populations, and on parole entries and discharges in participating jurisdictions. Demographic information, conviction offenses, sentence length, minimum time to be served, credited jail time, type of admission, type of release, and time served are collected from individual prisoner records. The collection began in 1983 and is conducted annually. Beginning in 1999, jurisdictions also began providing a stock file for all inmates held at yearend. In 2012, jurisdictions began reporting parole entry data. The number of states submitting data to NCRP has varied over the years, but at least 38 states have provided some data since 2000. All fifty states provided at least one type of NCRP record in 2011-2014, with 49 submitting data in 2015 and 47 in 2016.
The new and improved Corrections Statistical Analysis Tool (CSAT) - Prisoners is a dynamic analysis tool that allows access to more comprehensive, in-depth, state-level data on persons in state prison, including data by age, sex, race or ethnicity, offense, sentence length, time served in prison, and type of admission and release. It also allows access to pre-formatted frequently requested charts or the generation of custom statistics, figures, and maps on prison admissions, prison releases, and year-end prison populations for data between 1978 and 2019. The tool combines data from the National Corrections Reporting Program and National Prisoner Statistics data.