Winnebago County
| Use attributes for filter ! | |
| Area | 1344 |
|---|---|
| Population | 284,778 (2017) |
| County seat | Rockford |
| Colleges and universities | Rock Valley College |
| Points of interest | Anderson Japanese Gardens |
| Date of Reg. | |
| Date of Upd. | |
| ID | 2416651 |
About Winnebago County
Winnebago County is a county located in the U. S. state of Illinois. According to the 2010 census, it had a population of 295,266, making it the seventh most populous county in Illinois behind Cook County and its five surrounding collar counties. Its county seat is Rockford.