38 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 04103 | Portland | 32,024 |
| 04106 | South Portland | 27,019 |
| 04074 | Scarborough | 23,076 |
| 04011 | Brunswick | 22,336 |
| 04092 | Westbrook | 20,775 |
| 04062 | Windham | 19,188 |
| 04101 | Portland | 18,431 |
| 04038 | Gorham | 18,300 |
| 04102 | Portland | 17,267 |
| 04105 | Falmouth | 12,755 |
| 04107 | Cape Elizabeth | 9,656 |
| 04096 | Yarmouth | 9,053 |
| 04032 | Freeport | 8,802 |
| 04039 | Gray | 8,102 |
| 04084 | Standish | 7,900 |
| 04021 | Cumberland Center | 6,990 |
| 04260 | New Gloucester | 5,766 |
| 04009 | Bridgton | 5,478 |
| 04071 | Raymond | 4,971 |
| 04097 | North Yarmouth | 4,240 |
| 04079 | Harpswell | 4,026 |
| 04055 | Naples | 3,985 |
| 04015 | Casco | 3,696 |
| 04040 | Harrison | 3,050 |
| 04085 | Steep Falls | 2,762 |
| 04029 | Sebago | 2,086 |
| 04069 | Pownal | 1,696 |
| 04110 | Cumberland Foreside | 1,657 |
| 04066 | Orrs Island | 837 |
| 04108 | Peaks Island | 826 |
| 04091 | West Baldwin | 801 |
| 04017 | Chebeague Island | 555 |
| 04024 | East Baldwin | 356 |
| 04050 | Long Island | 249 |
| 04109 | Portland | 213 |
| 04003 | Bailey Island | 183 |
| 04057 | North Bridgton | 164 |
| 04019 | Cliff Island | 93 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 38 ZCTAs in Cumberland County, Maine (US Census).