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 22 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

Women's Mass Incarceration: The Whole Pie 2024

women's pie 2023 report thumbnail Women in the U.S. experience a starkly different criminal justice system than men do, but data on their experiences is difficult to find and put into context. We fill this gap in the data with a rich visual snapshot of how many women are locked up in the U.S., where, and why. Alongside our "big picture" chart, this 2024 update to provides a close-up view of women in local jails and the clearest picture yet who is incarcerated and why.



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 2023-2024 annual report.





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