There are 9 zip codes in San Juan County, Washington. The most populated is 98250, located in Friday Harbor. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
982508,953Friday Harbor
982454,088Eastsound
982613,112Lopez Island
98279614Olga
98280398Orcas
98243297Deer Harbor
98286158Shaw Island
98222117Blakely Island
9829755Waldron

Zip Codes in San Juan County, Washington by Population (2024)