Overall, there were roughly 167,000 fewer people in state prisons in 2020. One-third of the total drop (57,000 people) was due to fewer people sitting in prison for supervision violations. In addition, about 73,000 fewer people entered prison for supervision violations in 2020—a 30 percent drop in a single year. The cumulative result over this 3-year data collection effort showed that there were 31 percent fewer people in prison for technical supervision violations and 18 percent fewer people in prison for new offense violations, while all other populations (primarily new court commitments) dropped just 12 percent.
Despite the decline in total prison population, supervision violations still accounted for 42 percent of prison admissions in 2020, however. This included roughly 98,000 people admitted to prison for technical violations, such as missed curfews or failed drug tests. The large share of prison admissions from probation and parole continues to increase corrections costs and jeopardize progress for people in the criminal justice system.
As policymakers explore changes, it will also be helpful to look at actions that may have contributed to reductions prior to the pandemic. Indeed, from 2018 to 2019, states saw a faster decline in prison admissions for supervision violations (down five percent), especially technical violations, (down six percent) than other types of admissions (down just two percent).
If states sustain a reduction of 57,000 fewer people incarcerated for supervision violations each year, they could save an estimated $2.7 billion annually. These savings can be reinvested into mental health and substance use treatment services, community-based supports, and workforce development initiatives—all evidence-based services proven to reduce recidivism and positively impact the lives of people on supervision.