Real estate agents in St. Clair County, IL
No agents are listed for St. Clair County yet. Agents appear here only after they choose to.
St. Clair County by the numbers
- Active licensees
- 620
- Brokers
- 482
- Managing brokers
- 116
- Residential leasing agents
- 22
- Licensed brokerage firms
- 54
- First licensed in the last 12 months
- 59
Source: Illinois Department of Financial and Professional Regulation via data.illinois.gov, ODbL (public record), as of October 23, 2026. Counted by the address city and county on file with the state (county filled from the ZIP code when the state left it blank). Active means an active license.
Franchise offices in St. Clair County
4 real estate franchise offices list an address in St. Clair County: 2 Coldwell Banker and 2 Century 21.
- Coldwell Banker Brown Realtors 1928 Lebanon Ave, Belleville, 62221 (618) 235-7992 · Office site
- CENTURY 21 Advantage Real Estate, Inc. 103 South Main, Columbia, 62236 (618) 281-7621 · Office site
- CENTURY 21 Bailey & Co. 8 Eagle Center, O'Fallon, 62269 (618) 931-2121 · Office site
- Coldwell Banker Brown Realtors 911 E Highway 50, O'Fallon, 62269 (618) 632-4700 · Office site
Source: All The Places (CC-0), from each brand's public office locator, as of October 18, 2026. Not affiliated and not a recommendation; confirm details with the office.
Cities in St. Clair County with franchise offices
- O'Fallon2 offices
- Belleville1 office
- Columbia1 office
Real estate license guides for St. Clair County cities
Getting licensed? How to get an Illinois real estate license
Choosing an agent
- Ask how long they have worked in St. Clair County and what they sold or helped buy there recently.
- Look at their website and listings to see how they present a home.
- Check that their license is active with the state real estate commission.
Are you an agent in St. Clair County?
Get a free website, add St. Clair County to "Markets I serve" and switch on the directory listing. Brokers can put the whole office on one plan.
Listings here are chosen by each agent and are not a recommendation. Property Landing Pages is not a brokerage.