Data Source: Percent change in state prison populations for 30 states and the federal Bureau of Prisons compiled by the Prison Policy Initiative from state Department of Correction population reports, weekly federal population reports, and the Vera Institute of Justice's People in Prison 2019 report. (Graph: Emily Widra, 2021)

This graph originally appeared in Data update: As the Delta variant ravages the country, correctional systems are dropping the ball (again).