47 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 02536 | East Falmouth | 21,100 |
| 02601 | Hyannis | 16,066 |
| 02649 | Mashpee | 15,234 |
| 02532 | Buzzards Bay | 13,180 |
| 02632 | Centerville | 12,217 |
| 02645 | Harwich | 11,060 |
| 02563 | Sandwich | 10,315 |
| 02631 | Brewster | 10,189 |
| 02664 | South Yarmouth | 9,720 |
| 02673 | West Yarmouth | 8,969 |
| 02540 | Falmouth | 8,354 |
| 02648 | Marstons Mills | 7,592 |
| 02675 | Yarmouth Port | 6,919 |
| 02660 | South Dennis | 6,767 |
| 02537 | East Sandwich | 6,486 |
| 02653 | Orleans | 6,342 |
| 02642 | Eastham | 5,772 |
| 02633 | Chatham | 4,536 |
| 02667 | Wellfleet | 3,925 |
| 02562 | Sagamore Beach | 3,698 |
| 02657 | Provincetown | 3,681 |
| 02635 | Cotuit | 3,673 |
| 02644 | Forestdale | 3,618 |
| 02655 | Osterville | 3,535 |
| 02639 | Dennis Port | 3,387 |
| 02638 | Dennis | 3,256 |
| 02559 | Pocasset | 2,812 |
| 02556 | North Falmouth | 2,586 |
| 02630 | Barnstable | 2,539 |
| 02668 | West Barnstable | 2,514 |
| 02646 | Harwich Port | 1,715 |
| 02534 | Cataumet | 1,284 |
| 02659 | South Chatham | 1,090 |
| 02670 | West Dennis | 1,071 |
| 02650 | North Chatham | 1,017 |
| 02671 | West Harwich | 932 |
| 02652 | North Truro | 924 |
| 02542 | Buzzards Bay | 854 |
| 02666 | Truro | 751 |
| 02663 | South Wellfleet | 446 |
| 02637 | Cummaquid | 351 |
| 02641 | East Dennis | 299 |
| 02561 | Sagamore | 260 |
| 02647 | Hyannis Port | 228 |
| 02553 | Monument Beach | 38 |
| 02643 | East Orleans | 0 |
| 02672 | West Hyannisport | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 47 ZCTAs in Barnstable County, Massachusetts (US Census).