| Zip Code | City | Population ↓ |
|---|---|---|
| 4005 | Biddeford | 24,590 |
| 4072 | Saco | 20,446 |
| 4073 | Sanford | 17,389 |
| 4043 | Kennebunk | 11,566 |
| 4090 | Wells | 11,365 |
| 3909 | York | 10,811 |
| 4064 | Old Orchard Beach | 8,423 |
| 4093 | Buxton | 8,408 |
| 3904 | Kittery | 8,113 |
| 3901 | Berwick | 7,991 |
| 4046 | Kennebunkport | 7,965 |
| 4002 | Alfred | 7,618 |
| 3908 | South Berwick | 7,521 |
| 3903 | Eliot | 6,848 |
| 4027 | Lebanon | 6,499 |
| 3906 | North Berwick | 5,003 |
| 4042 | Hollis Center | 4,766 |
| 4083 | Springvale | 4,597 |
| 4049 | Limington | 3,920 |
| 4048 | Limerick | 3,244 |
| 4076 | Shapleigh | 2,926 |
| 4061 | North Waterboro | 2,909 |
| 4001 | Acton | 2,671 |
| 3902 | Cape Neddick | 2,607 |
| 4087 | Waterboro | 2,597 |
| 4030 | East Waterboro | 2,473 |
| 3905 | Kittery Point | 1,990 |
| 4020 | Cornish | 1,881 |
| 4047 | Parsonsfield | 1,720 |
| 4095 | West Newfield | 1,464 |
| 3907 | Ogunquit | 1,257 |
| 4063 | Ocean Park | 617 |
| 3911 | York Harbor | 315 |
| 4056 | Newfield | 106 |
| 4006 | Biddeford Pool | 75 |
| 3910 | York Beach | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 36 ZCTAs in York County, Maine (US Census).