HELP US END MASS INCARCERATION The Prison Policy Initiative uses research, advocacy, and organizing to dismantle mass incarceration. We’ve been in this movement for 24 years, thanks to individual donors like you.

Can you help us sustain this work?

Thank you,
Peter Wagner, Executive Director Donate

What’s New



Featured report

Mass Incarceration: The Whole Pie 2026

pie chart report 2023 thumbnail With nearly 2 million people locked up in more than 6,000 correctional facilities operated by thousands of agencies, getting the big picture is anything but easy. In the latest edition of Mass Incarceration: The Whole Pie, we break down how many people are locked up in the U.S., where, and why, provide an update on the latest trends, and highlight causes of incarceration that get too little attention as well as 10 incarceration "myths" that receive too much. We also look at the impact of the Trump administrations' immigration detention campaign on mass incarceration

Be sure to check out our other Whole Pie reports that focus specifically on the incarceration of women and the incarceration of young people.



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.




If our work is new to you, you might want to check out our 2024-2025 annual report.





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