Washington County, IL

Washington County
Population: 15,148
Population Density: 26.9 per square mile

Water Area Percentage: 0.27% (1.51 square miles)
Land Area Percentage: 99.73% (562.61 square miles)
Total Area: 564.12 square miles
Housing Units: 6,385 per square mile

County Links

Cities In Washington County
Addieville
Ashley
Centralia
Coulterville
Du Bois
Hoyleton
Irvington
Lenzburg
Marissa
Nashville
Oakdale
Okawville
Radom
Richview
Scheller

Airports
PRAIRIE STATE GENERATING
WASHINGTON COUNTY HOSPITAL

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