Washington has different zip codes with respect to counties. Adams County has 7 zip codes namely – 99105 for Benge post office, 99344 for Othello post office, 99327 for Cunningham post office, 99169 for Ritzville post office, 99332 for Hatton post office, 99371 for Washtucna post office and 99341 for Lind post office.
In Benton County, Washington the Kennewick post office has the maximum zip codes – 99336, 99338 and 99337. There are 6 other post offices in this County – Benton City, Prosser, Paterson, Richland, Plymouth and West Richland. In Chelan County Wenatchee post office has the maximum zip codes – 98801 and 98807.