From the U.S. Department of Justice Office of Justice Programs Bureau of Justice Statistics report:
In 2016, the number of persons supervised by U.S. adult correctional systems dropped for the ninth consecutive year.
From 2007 to 2016, the portion of the adult population under supervision of U.S. correctional systems decreased by 18%, from 3,210 to 2,640 per 100,000 adult residents. ?
The percentage of adults supervised by the U.S. correctional system was lower in 2016 than at any time since 1993.
The incarceration rate has declined since 2009 and is currently at its lowest rate since 1996. ?
On December 31, 2016, an estimated 6,613,500 persons were supervised by U.S. adult correctional systems, about 62,700 fewer persons than on January 1, 2016.
About 1 in 38 adults (or 2.6% of persons age 18 or older in the United States) were under some form of correctional supervision at year-end 2016. ?
The correctional population declined 0.9% during 2016 due to decreases in both the community supervision (down 1.1%) and incarcerated (down 0.5%) populations. ?
The community supervision population fell from 4,586,900 on January 1, 2016, to 4,537,100 on December 31, 2016.
All of the decrease in the community supervision population in 2016 was due to a decline in the probation population (down 52,500). ?
The incarcerated population decreased slightly from 2,172,800 in 2015 to 2,162,400 in 2016. ?
All of the decrease in the incarcerated population was due to a decline in the prison population (down 21,200), while the jail population remained relatively stable.
Read the full report here.