There are 8 zip codes in Island County, Washington. The most populated is 98277, located in Oak Harbor. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
9827740,181Oak Harbor
9828217,642Camano Island
982397,634Coupeville
982366,790Clinton
982605,434Langley
982494,372Freeland
982782,351Oak Harbor
982532,106Greenbank

Zip Codes in Island County, Washington by Population (2024)