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Survey of Prison Inmates (SPI)

The Survey of Prison Inmates (SPI) is a periodic, cross-sectional survey of the state and sentenced federal prison populations. Its primary objective is to produce national estimates on the state and sentenced federal prison populations across a variety of domains, including but not limited to demographic characteristics, current offense and sentence, incident characteristics, firearm possession and sources, criminal history, socioeconomic characteristics, family background, drug and...

National Prisoner Statistics Program (NPS) and the National Corrections Reporting Program (NCRP) 2015-2019

Closing Date
The NPS and NCRP are flagship data collections for BJS that measure the size and nature of state and federal prison populations on an annual basis. The two collections complement each other by obtaining aggregate and detailed individual-level information on prisoners for use in characterizing the prison population over time, as well use in statistical analyses that have policy implications. The NPS collects aggregate counts...