Post Offices List in Sagadahoc County, Maine:
| Bath Post Office | 750 Washington St, Bath, ME 04530 |
| Bowdoinham Post Office | 49 Pond Rd, Bowdoinham, ME 04008 |
| Georgetown Post Office | 765 Five Islands Rd, Georgetown, ME 04548 |
| Phippsburg Post Office | 520 Main Rd, Phippsburg, ME 04562 |
| Richmond Post Office | 92 Main St, Richmond, ME 04357 |
| Sebasco Estates Post Office | 415 Sebasco Rd, Sebasco Estates, ME 04565 |
| Topsham Post Office | 101 Main St, Topsham, ME 04086 |
| Woolwich Post Office | 53 Main St, Woolwich, ME 04579 |