Post Offices List in Hampden City, Maine:
| Hampden Post Office | 114 Western Ave, Hampden, ME 04444 |
| Eastern Maine Carrier Annex Post Office | 16 Penobscot Meadow Dr, Hampden, ME 04444 |
| Hampden Post Office | 114 Western Ave, Hampden, ME 04444 |
| Eastern Maine Carrier Annex Post Office | 16 Penobscot Meadow Dr, Hampden, ME 04444 |