| Locality | Postal Code |
|---|---|
| Baltic, New London | 06330 |
| Borough, New London | 06340 |
| Bozrah, New London | 06334 |
| Center Groton, New London | 06340 |
| Chesterfield, New London | 06370 |
| Colchester, New London | 06415 |
| East Lyme, New London | 06333 |
| Exeter, New London | 06249 |
| Fitchville, New London | 06334 |
| Franklin, New London | 06254 |
| Franklin Hill, New London | 06254 |
| Gales Ferry, New London | 06335 |
| Gilman, New London | 06336 |
| Glasgo, New London | 06384 |
| Griswold, New London | 06351 |
| Groton, New London | 06340 |
| Groton Long Point, New London | 06340 |
| Hadlyme, New London | 06439 |
| Hanover, New London | 06350 |
| Hopeville, New London | 06351 |
| Jewett City, New London | 06351 |
| Jordan Village, New London | 06385 |
| Jupiter Point, New London | 06340 |
| Lebanon, New London | 06249 |
| Ledyard, New London | 06339 |
| Lisbon, New London | 06351 |
| Postal Codes in Connecticut | |
|---|---|
| Windham | Tolland |
| New London | New Haven |
| Middlesex | Litchfield |
| Hartford | Fairfield |