- Chicago Department of Public Health Training Center
- 1642 Besly Court, Chicago, IL, 60642
- Chicago Urban League
- 4510 S. Michigan Ave., Chicago, IL
- Coles County Health Department
- 825 18th St., Charleston, IL, 61920
- Collinsville Parks and Recreation Department
- 10 Gateway Drive, Collinsville, IL, 62234
- Conference Chicago at University Center
- 525 S State St., Chicago, IL, 60605
- Coordinated Youth and Human Services
- 2016 Madison Ave., Granite City, IL, 62040
- Cornerstone Christian Church
- 3600 S. Banker, Effingham, IL, 62401
- Crowne Plaza
- 3000 S. Dirksen Parkway, Springfield, IL, 62703
- Crowne Plaza Chicago West Loop
- 25 S. Halsted St., Chicago, IL
- Department of Natural Resources
- 1 Natural Resources Way, Springfield Fair Grounds, Springfield, IL, 62707