There are 19 zip codes in Okanogan County, Washington. The most populated is 98841, located in Omak. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
988419,218Omak
988555,806Tonasket
988125,422Brewster
988404,775Okanogan
988444,348Oroville
988623,075Winthrop
988562,497Twisp
991161,538Coulee Dam
988461,381Pateros
988491,098Riverside
99155977Nespelem
98814688Carlton
98829638Malott
98827479Loomis
98859353Wauconda
99124270Elmer City
98834245Methow
98819205Conconully
98833153Mazama

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