Post Offices List in Groton City, Connecticut:
| Borough Post Office | 202 Thames St, Groton, CT 06340 |
| Groton Post Office | 100 Plaza Ct, Groton, CT 06340 |
| Groton Naval Base Post Office | 1 Naval Submarine Base, Groton, CT 06349 |
| Noank Post Office | 19 1/2 Pearl St, Groton, CT 06340 |
| Groton Long Point Post Office | 44 Beach Rd, Groton, CT 06340 |