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ZIP codes in Asotin County, Washington

Asotin County, Washington has 3 ZIP codes in this list, from 99401 to 99403. They cover 3 places, among them Anatone, Asotin and Clarkston.

ZIP codePlaceLand area (sq mi)Map point
99401Anatone18546.129, -117.088
99402Asotin33646.134, -117.001
99403Clarkston14346.395, -117.064

The ZIP code areas of Asotin County add up to about 665 square miles of land (1,722 sq km) as the Census Bureau draws them. The largest is 99402 (Asotin), with 336 square miles.

Using these codes

Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.

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