Johnson County Map, Illinois
Detailed road and geographic map of Johnson County.
County Information
- State: Illinois
- FIPS Code: 17087
- Population: 13,308
- Area (sq mi): 343.9
- Density: 38.7/sq mi
- Growth Trend: -0.5%
- Households: 5,526
- Election Data: Democrat
- Climate Zone: Mixed/Moderate
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Overview
Johnson County is located in the U.S. state of Illinois. It has a land area of approximately 343.9 square miles.