Data Download, Iowa Department of Corrections, August 2008

A startlingly new development has occurred over the past year: The number of offenders residing in Iowa’s correctional institutions has actually dropped. An ever increasing prison population – in 1990 the prison count stood at 3,842 offenders – reached an all-time high of 8,940 offenders on October 3,2007, an increase of 233% over 17 years. A significant cause for the increase has been longer stays in prison, due in part to the long-term effect of restrictions on parole eligibility. Over the past nine months, however, the prison population has been declining – to 8,573 on July 15, 2008 (not including 129 jail prisoners temporarily housed at ASP and IMCC due to the flooding). This represents a decrease of 367 offenders – or 4.1% - from the October 3, 2007 high.