| Localité | Code postal |
|---|---|
| Barnstable, Barnstable | 02630 |
| Bass River, Barnstable | 02664 |
| Bourne, Barnstable | 02532 |
| Brewster, Barnstable | 02631 |
| Buzzards Bay, Barnstable | 02532, 02542 |
| Cataumet, Barnstable | 02534 |
| Centerville, Barnstable | 02632 |
| Chatham, Barnstable | 02633 |
| Cotuit, Barnstable | 02635 |
| Cummaquid, Barnstable | 02637 |
| Dennis, Barnstable | 02638 |
| Dennis Port, Barnstable | 02639 |
| East Dennis, Barnstable | 02641 |
| East Falmouth, Barnstable | 02536 |
| East Harwich, Barnstable | 02645 |
| East Orleans, Barnstable | 02643 |
| East Sandwich, Barnstable | 02537 |
| Eastham, Barnstable | 02642 |
| Falmouth, Barnstable | 02540 |
| Forestdale, Barnstable | 02644 |
| Hardwich, Barnstable | 02645 |
| Harwich, Barnstable | 02645 |
| Harwich Port, Barnstable | 02646 |
| Hatchville, Barnstable | 02536 |
| Hyannis, Barnstable | 02601 |
| Hyannis Port, Barnstable | 02647 |