Incarceration in the United States of America is one of the main forms of punishment, rehabilitation, or both for the commission of felony and other offenses.
The United States has the highest documented incarceration rate in the world. At year-end 2009, it was 743 adults incarcerated per 100,000 population.
According to the U.S. Bureau of Justice Statistics (BJS), 2,266,800 adults were incarcerated in U.S. federal and state prisons, and county jails at year-end 2011 – about 0.7% of adults in the U.S. resident population. Additionally, 4,814,200 adults at year-end 2011 were on probation or on parole. In total, 6,977,700 adults were under correctional supervision) in 2011 – about 2.9% of adults in the U.S. resident population.