Washington (WA): códigos postais
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39Adams County 5Asotin County 3Benton County 10Chelan County 14Clallam County 11Clark County 23Columbia County 2Cowlitz County 11Douglas County 7Ferry County 9Franklin County 6Garfield County 1Grant County 16Grays Harbor County 21Island County 7Jefferson County 7King County 120Kitsap County 26Kittitas County 9Klickitat County 15Lewis County 22Lincoln County 11Mason County 9Okanogan County 19Pacific County 14Pend Oreille County 6Pierce County 79San Juan County 9Skagit County 14Skamania County 4Snohomish County 37Spokane County 53Stevens County 18Thurston County 21Wahkiakum County 4Walla Walla County 8Whatcom County 18Whitman County 22Yakima County 25