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Connecticut ZIP Codes
| ZIP Code | Type | City | County | County Code |
|---|---|---|---|---|
| 6418 | Derby | New Haven | 9009 | |
| 6419 | Killingworth | Middlesex | 9007 | |
| 6420 | Salem | New London | 9011 | |
| 6422 | Durham | Middlesex | 9007 | |
| 6423 | East Haddam | Middlesex | 9007 | |
| 6424 | East Hampton | Middlesex | 9007 | |
| 6426 | Essex | Middlesex | 9007 | |
| 6437 | Guilford | New Haven | 9009 | |
| 6438 | Haddam | Middlesex | 9007 | |
| 6441 | Higganum | Middlesex | 9007 | |
| 6442 | Ivoryton | Middlesex | 9007 | |
| 6443 | Madison | New Haven | 9009 | |
| 6444 | Marion | Hartford | 9003 | |
| 6447 | Marlborough | Hartford | 9003 | |
| 6450 | Meriden | New Haven | 9009 | |
| 6451 | Meriden | New Haven | 9009 | |
| 6455 | Middlefield | Middlesex | 9007 | |
| 6456 | Middle Haddam | Middlesex | 9007 | |
| 6457 | Middletown | Middlesex | 9007 | |
| 6460 | Milford | New Haven | 9009 | |
| 6461 | Milford | New Haven | 9009 | |
| 6467 | Milldale | Hartford | 9003 | |
| 6468 | Monroe | Fairfield | 9001 | |
| 6469 | Moodus | Middlesex | 9007 | |
| 6470 | Newtown | Fairfield | 9001 | |
| 6471 | North Branford | New Haven | 9009 | |
| 6472 | Northford | New Haven | 9009 | |
| 6473 | North Haven | New Haven | 9009 | |
| 6475 | Old Saybrook | Middlesex | 9007 | |
| 6477 | Orange | New Haven | 9009 | |
| 6478 | Oxford | New Haven | 9009 | |
| 6479 | Plantsville | Hartford | 9003 | |
| 6480 | Portland | Middlesex | 9007 | |
| 6481 | Rockfall | Middlesex | 9007 | |
| 6482 | Sandy Hook | Fairfield | 9001 | |
| 6483 | Seymour | New Haven | 9009 | |
| 6484 | Shelton | Fairfield | 9001 | |
| 6488 | Southbury | New Haven | 9009 | |
| 6489 | Southington | Hartford | 9003 | |
| 6492 | Wallingford | New Haven | 9009 | |
| 6498 | Westbrook | Middlesex | 9007 | |
| 6510 | New Haven | New Haven | 9009 | |
| 6511 | New Haven | New Haven | 9009 | |
| 6512 | East Haven | New Haven | 9009 | |
| 6513 | New Haven | New Haven | 9009 | |
| 6514 | Hamden | New Haven | 9009 | |
| 6515 | New Haven | New Haven | 9009 | |
| 6516 | West Haven | New Haven | 9009 | |
| 6517 | Hamden | New Haven | 9009 | |
| 6518 | Hamden | New Haven | 9009 |
Connecticut Cities & Towns
- Hartford(7)
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