Zip Area Code

Benton County, Washington

Benton County, Washington, has 11 towns and 11 ZIP codes, in area code 509.

Towns in Benton County, A to Z

TownZIP codesArea codes
Bentonnearest99320509
Benton City99320509
Finleynearest99336509
Kennewick99336, 99337, 99338509
Paterson99345509
Plymouth99346509
Prosser99350509
Richland99352, 99354509
Sunnyside98944509
West Pasconearest99336509
West Richland99353509

ZIP codes in Benton County

Area code in Benton County

  • Area code 509

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