Zip Area Code

Dayton, Washington

Dayton, Washington, in Columbia County, has ZIP code 99328 and area code 509.

ZIP code
99328
Area code
509
Time zone
Pacific Time
Coordinates
46.3075, -117.9738

ZIP codes in Dayton

ZIP codePost officeCountyArea codes
99328DaytonColumbia County509

Area code for Dayton

  • Area code 509

    In service since 1957. Local calls are dialed with ten digits; dialing 1 plus ten digits also works.

Time zone

Dayton is in the Pacific Time zone.

Towns near Dayton