There are 38 zip codes in Cumberland County, Maine. The most populated is 4103, located in Portland. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
410331,892Portland
410626,873South Portland
407422,098Scarborough
401121,691Brunswick
409220,339Westbrook
406218,648Windham
403817,999Gorham
410117,832Portland
410217,501Portland
410512,436Falmouth
41079,519Cape Elizabeth
40968,984Yarmouth
40328,700Freeport
40397,893Gray
40847,345Standish
40216,633Cumberland Center
42605,705New Gloucester
40095,366Bridgton
40714,958Raymond
40794,250Harpswell
40974,106North Yarmouth
40553,928Naples
40153,657Casco
40853,107Steep Falls
40403,044Harrison
40292,011Sebago
41101,810Cumberland Foreside
40691,600Pownal
4108859Peaks Island
4091740West Baldwin
4066644Orrs Island
4017597Chebeague Island
4024432East Baldwin
4050282Long Island
4109141Portland
4003123Bailey Island
4057105North Bridgton
401955Cliff Island
showing: 38 rows

Zip Codes in Cumberland County, Maine by Population (2024)