| Business | Phone |
| Troy Water Plant 819 N Bluff Rd, Collinsville 62234 | (618) 344-2233 |
| City Garage 850 S Morrison Ave, Collinsville 62234 | (618) 346-5214 |
| City Of Collinsville Waste 1008 Hickory Pt, Collinsville 62234 | (618) 344-2370 |
| Collinsville Fire Dept 1160 Belt Line Rd, Collinsville 62234 | (618) 346-5215 |
| Collinsville Animal Shelter 298 Simpson Rd, Collinsville 62234 | (618) 346-5213 |
| Collinsville City Office 2020 N Keebler Ave, Collinsville 62234 | (618) 345-3732 |
| Collinsville City Office 205 Gaylord Dr, Collinsville 62234 | (618) 346-9943 |
| Collinsville City Office 2100 Golfview Dr, Collinsville 62234 | (618) 345-4492 |
| Collinsville City Office 335 Summit Ave, Collinsville 62234 | (618) 345-7129 |
| Collinsville City Office 730 Ostle Dr, Collinsville 62234 | (618) 343-2578 |
| Collinsville Community Svc Dep 125 S Center St, Collinsville 62234 | (618) 346-5207 |
| General Assistance 305 E Main St, Collinsville 62234 | (618) 344-1290 |
| Collinsville Waste Water Treat 300 Simpson Rd, Collinsville 62234 | (618) 346-5211 |
| Senior Citizens Bus Svc 125 S Center St, Collinsville 62234 | (618) 344-2729 |