| Business | Phone |
| Trumbull Building Official 5866 Main St, Trumbull 6611 | (203) 452-5020 |
| Trumbull Counseling Ctr 121 Old Mine Rd, Trumbull 6611 | (203) 261-5110 |
| Trumbull Data Processing 6254 Main St, Trumbull 6611 | (203) 452-5093 |
| Trumbull Emergency Medical Svc 250 Middlebrooks Ave, Trumbull 6611 | (203) 452-5078 |
| Trumbull Engineering Dept 5866 Main St, Trumbull 6611 | (203) 452-5049 |
| Trumbull Inland Wetlands Comm 5866 Main St, Trumbull 6611 | (203) 452-5046 |
| Trumbull Personnel 5866 Main St, Trumbull 6611 | (203) 452-5040 |
| Trumbull Purchasing Dept 5866 Main St, Trumbull 6611 | (203) 452-5031 |
| Trumbull Registrar Of Voters 5866 Main St, Trumbull 6611 | (203) 452-5058 |
| Trumbull Senior Citizens Ctr 23 Priscilla Pl, Trumbull 6611 | (203) 452-5199 |
| Trumbull Town Arts Coordinator 23 Priscilla Pl, Trumbull 6611 | (203) 452-5065 |
| Trumbull Town Data Processing Trumbull 6611 | (203) 452-5073 |
| Trumbull Town Dog Warden 300 Church Hill Rd, Trumbull 6611 | (203) 452-5088 |
| Trumbull Town Engineer 5866 Main St, Trumbull 6611 | (203) 452-5050 |
| Trumbull Town Finance Director 5866 Main St, Trumbull 6611 | (203) 452-5009 |
| Trumbull Town First Selectman 5866 Main St, Trumbull 6611 | (203) 452-5005 |
| Trumbull Town Highway Garage 366 Church Hill Rd, Trumbull 6611 | (203) 452-5070 |
| Trumbull Youth Dept 5866 Main St, Trumbull 6611 | (203) 452-5057 |