Winnebago County, Illinois sentencing data
As of June 30, 2026, according to Illinois Department of Corrections records, 1,048 people sentenced in Winnebago County were held in Illinois state prisons. Their median sentence is 8 years, shorter than the statewide median of 10 years. 28% are serving 20 years or more, compared with 33% statewide. The most common offense is uuw-felon poss/use firearm prior.
Sentences by offense: Winnebago 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 | Winnebago median (yrs) | Illinois median (yrs) |
|---|---|---|---|
| Uuw-Felon Poss/Use Firearm Prior | 69 | 7 | 6 |
| Murder/Intent To Kill/Injure | 64 | 50 | 40 |
| Murder/Strong Prob Kill/Injure | 55 | 50 | 40 |
| Agg Domestic Battery/Strangle | 43 | 4 | 4.5 |
| Pred Crim Sex Asslaut/Victim <13 | 41 | 10 | 14 |
| Attempt Murder/Intent To Kill/Injure | 31 | 20 | 25 |
| Armed Habitual Criminal | 30 | 8 | 8 |
| Murder/Other Forcible Felony | 28 | 30 | 35 |
| Agg Battery/Discharge Firearm | 21 | 13 | 12 |
| Manu/Del 01-15 Grams Cocaine | 18 | 6.5 | 6.5 |
| Manu/Del 15<100 Grams Cocaine | 16 | 10 | 9 |
| Agg Dui/Death Of Another | 16 | 10 | 9 |
Race
| Group | People | Share |
|---|---|---|
| Black | 634 | 60% |
| White | 286 | 27% |
| Hispanic | 114 | 11% |
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 Winnebago 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.