What’s New
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First look at the How Many Stops Act data
by Data Collaborative for Justice
October 30: Research Library: Policing
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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
Hiding in Plain Sight: How local jails obscure and facilitate mass deportation under Trump
Local jails, even in some sanctuary cities and states, are playing an essential role in President Trump’s mass detention and deportation plan. This report breaks down the complicated overlap between local criminal legal systems and immigration, and offers detailed data tables showing the level of involvement in every state and in specific jails. It also reveals that the Trump administration is circumventing city and county sanctuary policies by referring more immigrants for federal prosecution, meaning they go unnoticed both in local jails and in statistics about detention.
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:
The unmet health needs of people in prison
States fall far short of their duty to meet the health needs of incarcerated people.
All profit, no risk
The bail industry exploits cracks and loopholes in the legal system to avoid accountability, while growing its profits.
Compare your state's use of the prison to the world at large
Criminal justice policy in every region of the United States is out of step with the rest of the world.
Prison Gerrymandering Project
We are leading the movement to protect our democracy from the Census Bureau's prison miscount.
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.