Post office locations in 06340
| Post Office | Address | Phone | Hours |
| BOROUGH | 202 THAMES ST GROTON, CT 06340 - 3649 | 860-445-0180 | Mon-Fri 09:30 AM - 12:30 PM Sat-Sun Closed |
| GROTON | 100 PLAZA CT GROTON, CT 06340 - 9998 | 860-445-8154 | Mon-Fri 08:00 AM - 05:00 PM Sat 08:30 AM - 12:00 PM Sun Closed |
| GROTON LONG POINT | 44 BEACH RD GROTON, CT 06340 - 9992 | 860-536-1404 | Mon-Fri 10:30 AM - 01:00 PM Sat-Sun Closed |
| NOANK | 19 1/2 PEARL ST GROTON, CT 06340 - 5723 | 860-536-1433 |