Dayton Zip Codes - Columbia County WA

Dayton, WA Zip Code Map

Dayton, WA is a city located in Columbia County, Washington and has a land area of 657.29 square miles (1,702.37 km2). The water area for the city is 3.45 square miles or 8.94 km2. There is one unique zip code in Dayton, Washington and it is 99328. The area code(s) for Dayton is 509.

Zip Codes for Dayton, WA (1)
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99328 Dayton Columbia

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