St. Clair County Illinois
St. Clair County Seat
10 Public Square
Belleville, IL 62220
618-277-6600
Assessor: 618-277-6600
Auditor: 618-277-6600
Circuit Clerk: 618-277-6600
County Board Chairman: 618-277-6600
County Clerk: 618-277-6600
Building and Zoning: 618-277-6600
Parks and Recreation: 618-277-6600
Probation and Court Services: 618-277-5690