Arizona Department of Corrections Annual Inmate Count
Arizona's prison population has continued to grow steadily throughout the decade. The increase is driven by the influx of both offenders who commit new crimes and individuals on probation or parole who commit "technical violations," including failure to consult with probation officers and failure of a drug test. These data come from the Arizona Department of Corrections, which supervises prisoners and parolees statewide. Most inmates sent to prison have been convicted of a felony crime carrying a penalty of more than one year of incarceration. An exception to this are inmates convicted of DUI, who usually serve less than one year. The prison system has been overcrowded for at least the entire decade. "Overcrowded" means there are more prisoners than regularly provided beds for them.