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
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map of U.S. prison construction, 1900-2000

Data Source: Bureau of Justice Statistics. (Map: Rose Heyer, 2005)

Rose Heyer has made the some of the underlying data from this map available.



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