Rock Island County, Illinois sentencing data
As of June 30, 2026, according to Illinois Department of Corrections records, 301 people sentenced in Rock Island County were held in Illinois state prisons. Their median sentence is 9 years, shorter than the statewide median of 10 years. 31% are serving 20 years or more, compared with 33% statewide. The most common offense is murder/strong prob kill/injure.
Sentences by offense: Rock Island County vs. Illinois
Offenses with 10+ people. Median of the longest sentence from each person's most recent sentencing; life and death sentences not included.
| Offense | People | Rock Island median (yrs) | Illinois median (yrs) |
|---|---|---|---|
| Murder/Strong Prob Kill/Injure | 22 | 45 | 40 |
| Pred Crim Sex Asslaut/Victim <13 | 21 | 13 | 14 |
| Murder/Intent To Kill/Injure | 12 | 49 | 40 |
| Meth Delivery/15<100 Grams | 11 | 6 | 10 |
Race
| Group | People | Share |
|---|---|---|
| White | 143 | 48% |
| Black | 129 | 43% |
| Hispanic | 24 | 8.0% |
Groups with fewer than 10 people are not shown.
Other Illinois counties
About this data
Source: Illinois Department of Corrections public inmate records. People currently in state prison custody whose longest sentence was imposed in Rock Island County, one record per person, using the longest sentence from their most recent sentencing. Criminal history is not in the data, so differences between counties can reflect prior records as well as sentencing practice.