Illinois Counties
Illinois, Located in the Midwest, it is home to Chicago, the third-largest city in the US. The state is a major transportation hub and an agricultural leader, known for its vast corn and soybean fields. It also plays a significant role in manufacturing and finance.. There are 102 county in Illinois. You can find the list of these counties and detailed information from the links below.
Peoria County
Peoria County, population 177,652
Perry County
Perry County, population 20,664
Piatt County
Piatt County, population 16,355
| County Name | Population | Cities |
|---|---|---|
| Peoria County | 177,652 | Peoria County cities |
| Perry County | 20,664 | Perry County cities |
| Piatt County | 16,355 | Piatt County cities |
| Pike County | 15,239 | Pike County cities |
| Pope County | 4,142 | Pope County cities |
| Pulaski County | 5,201 | Pulaski County cities |
| Putnam County | 5,716 | Putnam County cities |