Prisoners by Age, Sex and Race

• In Illinois prisons, of the 45,545 prisoners serving as of June, 2009, 94.3 percent were male and 5.7 percent were female, with the average prisoner 35.2 years old. In terms of race, 58.4 percent of prisoners were black; 28.3 percent were white; 12.7 percent were Hispanic; and less than one percent were Asian, American Indian, or a non-classified race.
  
  

Prisoners by Offense

• According to the Illinois Department of Correction's 2009 Annual Report, of the 45,545 prisoners serving as of June, 2009, 19.9 percent, or 9,049 prisoners, were serving time for homicide, the largest percentage for one class of crime. Drug violations were second, with 19.3 percent, or 8,765 prisoners. Sexual assault comprised 10.1 percent, or 4,593; burglary comprised 10.6 percent, or 4,844; robbery and armed robbery comprised nine percent, or 4,098; and assault crimes comprised 6.1 percent, or 2,776 prisoners.
  
  

Prisoners by County

• Of all of the counties in Illinois, Cook County sentences the largest number of prisoners with 51.1 percent, or 23,251 of the total population in June, 2009. Most counties commit less than 1 percent per year, but counties with 1 to 4 percent of total sentences include Champaign, DuPage, Kane, Kankakee, Lake, LaSalle, McLean, Macon, Madison, Peoria, St. Clair, Sangamon, Vermilion, Will and Winebago Counties.
  
  

Sentencing

• Of the 45,545 prisoners in Illinois prisons as of June 2009, 94.8 percent, or about 43,300 prisoners are serving a sentence that will expire, while 1,497 prisoners, or 3.3 percent, are serving a sentence with life without parole. The remaining amount are serving in adult centers or programs.
  
  

Parole Violations

• Once their sentences ended, 65.5 percent, or 24,139 prisoners, were released, while 9 percent, or 3,326 prisoners, violate parole through committing a crime. Technical parole violators, or those who commit non-crimes, amount to 25.5 percent, or 9,372 prisoners.