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.
Rock Island County
Rock Island County, population 140,907
Randolph County
Randolph County, population 31,351
Richland County
Richland County, population 15,507
| County Name | Population | Cities |
|---|---|---|
| Randolph County | 31,351 | Randolph County cities |
| Richland County | 15,507 | Richland County cities |
| Rock Island County | 140,907 | Rock Island County cities |