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Middlesex ZIP Codes — Connecticut (CT)
| City or Location | County or District | States or Territories | States or Territories Abbrieviation | ZIP Code or Postcode |
|---|---|---|---|---|
| Centerbrook | Middlesex | Connecticut | CT | 06409 |
| Chester | Middlesex | Connecticut | CT | 06412 |
| Clinton | Middlesex | Connecticut | CT | 06413 |
| Cobalt | Middlesex | Connecticut | CT | 06414 |
| Cromwell | Middlesex | Connecticut | CT | 06416 |
| Deep River | Middlesex | Connecticut | CT | 06417 |
| Killingworth | Middlesex | Connecticut | CT | 06419 |
| Durham | Middlesex | Connecticut | CT | 06422 |
| East Haddam | Middlesex | Connecticut | CT | 06423 |
| East Hampton | Middlesex | Connecticut | CT | 06424 |
| Essex | Middlesex | Connecticut | CT | 06426 |
| Haddam | Middlesex | Connecticut | CT | 06438 |
| Higganum | Middlesex | Connecticut | CT | 06441 |
| Ivoryton | Middlesex | Connecticut | CT | 06442 |
| Middlefield | Middlesex | Connecticut | CT | 06455 |
| Middle Haddam | Middlesex | Connecticut | CT | 06456 |
| Middletown | Middlesex | Connecticut | CT | 06457 |
| Middletown | Middlesex | Connecticut | CT | 06459 |
| Moodus | Middlesex | Connecticut | CT | 06469 |
| Old Saybrook | Middlesex | Connecticut | CT | 06475 |
| Portland | Middlesex | Connecticut | CT | 06480 |
| Rockfall | Middlesex | Connecticut | CT | 06481 |
| Westbrook | Middlesex | Connecticut | CT | 06498 |
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