| Business | Phone |
| Hampden Building Inspection 10 Main Rd S, Hampden 4444 | (207) 000-1111 |
| Hampden Code Enforcement 106 Western Ave, Hampden 4444 | (207) 862-4500 |
| Hampden Recreational Dept 106 Western Ave, Hampden 4444 | (207) 862-6451 |
| Hampden Town Office 106 Western Ave, Hampden 4444 | (207) 862-3034 |
| Hampden Town Planning 106 Western Ave, Hampden 4444 | (207) 862-6527 |
| Hampden Water District 140 Main Rd N, Hampden 4444 | (207) 862-3490 |