Marion County Map, Illinois
Detailed road and geographic map of Marion County.
County Information
- State: Illinois
- FIPS Code: 17121
- Population: 37,729
- Area (sq mi): 572.4
- Density: 65.9/sq mi
- Growth Trend: -0.5%
- Households: 17,358
- Election Data: Republican
- Climate Zone: Cold/Continental
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Overview
Marion County is located in the U.S. state of Illinois. It has a land area of approximately 572.4 square miles.