St. Clair County, IL

St. Clair County
Population: 256,082
Population Density: 385.8 per square mile

Water Area Percentage: 1.51% (10.15 square miles)
Land Area Percentage: 98.5% (663.81 square miles)
Total Area: 673.95 square miles
Housing Units: 104,446 per square mile

County Links

Lakes In St. Clair County
• Baldwin Lake

Cities In St. Clair County
Belleville
Caseyville
Collinsville
Columbia
Dupo
East Carondelet
East St Louis
Fairview Heights
Freeburg
Lebanon
Lenzburg
Lovejoy
Madison
Marissa
Mascoutah
Millstadt
National Stock Yards
New Athens
New Baden
O'Fallon
Smithton
St Libory
Summerfield
Trenton
Troy
Venice
Waterloo