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Graph showing the local jail incarceration rate from 1940 to 2015

Data Source: Compiled from multiple Bureau of Justice Statistics data sets for the jail population and divided by U.S. Census Bureau annual estimates of the total population. See our blog post about the Bureau of Justice Statistics data and Tracking State Prison Growth in 50 States for the sources of population data through 2012. More recent Census Bureau estimates are from the relevant section in American Factfinder. (Graph: Joshua Aiken, 2017)

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