What’s New
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Military service and lifetime arrests:
Examining the effects of the total military experience on arrests in a sample of prison inmates by Erika J. Brooke & Jacinta M. Gau
October 27: Research Library: General
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Breaking ICE: Most bans on ICE collaboration don’t go far enough. Here’s how to make them stronger
State and local governments play a critical role in the detention and deportation machinery. Here’s how advocates can make bans on 287(g) agreements more effective and place additional limits on ICE overreach.
October 15: Briefings
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New report shows where 198,800 incarcerated women in the U.S. are locked up and why
The report goes in-depth on women’s incarceration in local jails, ICE detention, and other forms of confinement.
October 14: Press releases
Featured report
Women's Mass Incarceration: The Whole Pie 2026
Mass incarceration, state by state
Learn about the national prison crisis and how we can begin to turn the tide on mass incarceration. Then, drill down to your state. Be sure to also check out our pages focused on D.C., and the incarceration of Native people.
Select your state:
If our work is new to you, you might want to check out our 2025-2026 annual report.
Recommended Reading:
Advocacy Toolkit
Resources, tips, and best practices to help advocates working to end mass incarceration.
50 state incarceration profiles
All of our recent reports about prison/jail growth, racial disparities, and more, re-organized by state.
Mass Incarceration: The Whole Pie
The U.S. incarcerates nearly 2 million people. Where are they locked up and why? Read our report.
Events
- November 18-21, 2026:
Members of our Research team, will be attending the American Society of Criminology annual meeting in Chicago from November 18th through the 21st. Please reach out if you’d like to set up a meeting.
Not near you?
Invite us to your city, college or organization.