Data toolbox
All of our reports and many of our briefings compile previously unavailable or incompatible data. For the benefit of other advocates and researchers who want to do new things with our data, we’ve compiled our unique datasets on this page:
National data
State-level criminal justice data (all states)
- Percent of prison populations 55 and older, by state, 2013-2015 with comparative total prison population counts for each state [xlsx]
- Incarcerated populations by race/ethnicity and gender for each state with comparative total population counts and incarceration rate per 100,000 calculations [xlsx]
- Total confined population: Confined populations by state, type of confinement, and gender (2018)
- Total population under correctional control (including probation and parole): Incarceration and supervision populations and rates by state (2018)
- Unique admissions to local jails by state, 2016-2017
- Jail admissions and releases by state, 2013
- Jails: Jail incarceration trends by state
- Jails - Pre-trial detention: Jail population by state and conviction status, 1978-2013
- Jails and Prisons - Over time (annual data from 1978-2015):
- Jails - Regulation: Agencies responsible for setting jail standards Also specified whether their authority is binding
- Jails - Mail restrictions: State policies on restricting mail to jails
- Prisons - Gender: Changes in state prison populations 2009-2015, by gender
- Prisons - Wages:
- Prisons - Fees:
- Phones:
- Parole: populations, growth, returns to incarceration, technical violations, and release decisions, by state
- Releases: Annual releases from state prisons and local jails, by gender and by state using 2013-2016 data [xlsx]
Data specific to only one state:
- New York:
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The number of incarcerated people as of 2010 from each: city and village, County, State Assembly district, State Senate district, Zip code and Census tract; plus for New York City, each:
City Council district, Community district, Community health district, Elementary School Zone, Middle School Zone, Police precinct, United Hospital Fund neighborhood, Neighborhood Tabulation Area, and Public Use Microdata Area; and also each:
Albany Common Council district, Albany County Legislature district, Buffalo Common Council district, Rochester City Council district, Syracuse Common Council District, and Yonkers City Council District.
- Maryland:
- Massachusetts:
- Michigan
Population data (for calculating incarceration rates, etc.)
- National population estimates:
Other curated resources: