38 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 04103 | Portland | 31,705 |
| 04106 | South Portland | 26,966 |
| 04074 | Scarborough | 22,527 |
| 04011 | Brunswick | 22,081 |
| 04092 | Westbrook | 20,484 |
| 04062 | Windham | 19,041 |
| 04038 | Gorham | 18,192 |
| 04101 | Portland | 18,128 |
| 04102 | Portland | 17,642 |
| 04105 | Falmouth | 12,557 |
| 04107 | Cape Elizabeth | 9,581 |
| 04096 | Yarmouth | 9,006 |
| 04032 | Freeport | 8,736 |
| 04039 | Gray | 8,004 |
| 04084 | Standish | 7,695 |
| 04021 | Cumberland Center | 6,629 |
| 04260 | New Gloucester | 5,733 |
| 04009 | Bridgton | 5,357 |
| 04071 | Raymond | 4,922 |
| 04097 | North Yarmouth | 4,173 |
| 04079 | Harpswell | 4,094 |
| 04055 | Naples | 3,949 |
| 04015 | Casco | 3,656 |
| 04040 | Harrison | 2,963 |
| 04085 | Steep Falls | 2,822 |
| 04029 | Sebago | 2,124 |
| 04110 | Cumberland Foreside | 1,917 |
| 04069 | Pownal | 1,551 |
| 04066 | Orrs Island | 845 |
| 04108 | Peaks Island | 788 |
| 04091 | West Baldwin | 751 |
| 04017 | Chebeague Island | 568 |
| 04024 | East Baldwin | 414 |
| 04050 | Long Island | 300 |
| 04109 | Portland | 188 |
| 04057 | North Bridgton | 180 |
| 04003 | Bailey Island | 90 |
| 04019 | Cliff Island | 54 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 38 ZCTAs in Cumberland County, Maine (US Census).