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Methodology and updates

To view and download the methodology, click here.

Updated September 6, 2018, to remove offense categories from certain states where data are insufficient or not available. Users were not able to modify these categories previously, but we have taken the additional step of removing them from the display to avoid confusion.

Project Credits

This feature was funded by the American Civil Liberties Union. We are grateful to them and to all our funders, who make it possible for Urban to advance its mission. The views expressed are those of the authors and should not be attributed to the Urban Institute, its trustees, or its funders. Funders do not determine research findings or the insights and recommendations of our experts. More information on our funding principles is available here. Read our terms of service here.

DESIGN Byron Black, John Wehmann, and Christina Baird
DEVELOPMENT Ben Chartoff and Daniel Wood
EDITING Daniel Matos
WRITING Serena Lei
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Prison Population
Forecaster
Last updated: September 6, 2018
Use our forecaster to explore how policy changes could affect state prison populations. Adjust prison admissions and term lengths. Customize your choices by state and by type of offense. Compare your forecast with the latest year of data or what’s expected (the baseline) in 2025. And save and share what you find.
Last updated: September 6, 2018
Population
Compared with the
, these changes would lead to a
Racial and ethnic makeup of the prison population
Cost
By , these changes would lead to a cumulative of in state corrections spending.
Corrections spending data are not available for Washington, DC.