Charles Suarez
St. Clair County Treasurer
Office Hours
8:00 a.m. – 5:00 p.m. Monday through Friday
St. Clair County Treasurer
St. Clair County Building
10 Public Square
Belleville IL 62220
618-825-2707 Real Estate Tax Inquiries.
618-825-2451 Mobile Home Tax Inquiries
618-277-6600 all other inquiries.
Mail Real Estate Tax Payments:
St. Clair County Collector
Post Office Box 23980
Belleville IL 62223