Williamson County Map, Illinois
Detailed road and geographic map of Williamson County.
County Information
- State: Illinois
- FIPS Code: 17199
- Population: 67,153
- Area (sq mi): 420.1
- Density: 159.9/sq mi
- Growth Trend: +1.2%
- Households: 31,818
- Election Data: Democrat
- Climate Zone: Mixed/Moderate
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Overview
Williamson County is located in the U.S. state of Illinois. It has a land area of approximately 420.1 square miles.