National Corrections Reporting Program, 1991-2020: Selected Variables (ICPSR 38492)

Version Date: Nov 28, 2022 View help for published

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United States. Bureau of Justice Statistics


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NCRP 1991-2020

The National Corrections Reporting Program (NCRP) compiles offender-level data on admissions and releases from state and federal prisons and post-confinement community supervision. The data are used to monitor the nation's correctional population and address specific policy questions related to recidivism, prisoner reentry, and trends in demographic characteristics of the incarcerated and community supervision populations. The Bureau of Justice Statistics (BJS) has administered the NCRP since 1983. Abt Associates has served as the NCRP data collection agent since October 2010. This version of the NCRP contains selected variables making it suitable for public release.

This version of the NCRP data contains data for term records, prison admissions, prison releases, and year-end prison population counts. The data files have selected variables making the data suitable for public release. The complete version of NCRP data is classified as restricted access. Please search for (ICPSR No. 38491) to find the analogous complete version of this file.

United States. Bureau of Justice Statistics. National Corrections Reporting Program, 1991-2020: Selected Variables. Inter-university Consortium for Political and Social Research [distributor], 2022-11-28.

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United States Department of Justice. Office of Justice Programs. Bureau of Justice Statistics


Inter-university Consortium for Political and Social Research

1991-01-01 -- 2020-12-31
1991-01-01 -- 2021-10-31
  1. Some values in the date variables are likely entry mistakes by the state. Users should run frequencies prior to analysis to identify outliers.



All persons admitted to state prison, released from state prison, or in state prison at year-end from 1991 to 2020 in the United States.



2022-11-28 ICPSR data undergo a confidentiality review and are altered when necessary to limit the risk of disclosure. ICPSR also routinely creates ready-to-go data files along with setups in the major statistical software formats as well as standard codebooks to accompany the data. In addition to these procedures, ICPSR performed the following processing steps for this data collection:

  • Standardized missing values.
  • Checked for undocumented or out-of-range codes.


  • The public-use data files in this collection are available for access by the general public. Access does not require affiliation with an ICPSR member institution.

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This dataset is maintained and distributed by the National Archive of Criminal Justice Data (NACJD), the criminal justice archive within ICPSR. NACJD is primarily sponsored by three agencies within the U.S. Department of Justice: the Bureau of Justice Statistics, the National Institute of Justice, and the Office of Juvenile Justice and Delinquency Prevention.