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.

Lake County
Lake County

Lake County, population 693,593

LaSalle County
LaSalle County

LaSalle County, population 107,571

Livingston County
Livingston County

Livingston County, population 35,414

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Counties on Map (6)