Founded in 1852, King County is one of 39 counties in the state of Washington. Historically, King County was formed from Thurston County. The city of Seattle is the county seat. With FIPS code of 33, King County has a population of 2,269,675 and area of 2,115 square miles (5,478 km2).
List of all cities in King County, WA alphabetically
| City/Town | Postal Code | Area Code |
| Adelaide, WA | 98052 | 425/564 |
| Algona, WA | 98001 | 253/564 |
| Amazon.com, WA | 98170 | 206/564 |
| Ames Lake, WA | 98052 | 425/564 |
| Auburn, WA | 98001 | 253/564 |
| 98002 | 253/564 | |
| 98003 | 253/564 | |
| 98023 | 253/564 | |
| 98047 | 253/564 | |
| 98063 | 253/564 | |
| 98071 | 253/564 | |
| 98092 | 253/564 | |
| 98093 | 253/564 | |
| Avondale, WA | 98052 | 425/564 |
| Ballard, WA | 98107 | 206/564 |
| Bank of America, WA | 98184 | 206/564 |
| Baring, WA | 98224 | 360/564 |
| Beacon Hill, WA | 98144 | 206/564 |
| Beaux Arts, WA | 98004 | 425/564 |
| Beaux Arts Village, WA | 98004 | 425/564 |
| Bellevue, WA | 98004 | 425/564 |
| 98005 | 425/564 | |
| 98006 | 425/564 | |
| 98007 | 425/564 | |
| 98008 | 425/564 | |
| 98009 | 425/564 | |
| 98015 | 425/564 | |
| Bitter Lake, WA | 98133 | 206/564 |
| 98177 | 206/564 | |
| Black Diamond, WA | 98010 | 360/564 |
| Bothell, WA | 98011 | 425/564 |
| 98028 | 425/564 | |
| 98041 | 425/564 | |
| Broadway, WA | 98102 | 206/564 |
| Bryn Mawr, WA | 98178 | 206/564 |
| Burien, WA | 98146 | 206/564 |
| 98148 | 206/564 | |
| 98166 | 206/564 | |
| 98168 | 206/564 | |
| Burton, WA | 98013 | 206/564 |
| Capital One, WA | 98190 | 206/564 |
| Capitol Hill, WA | 98102 | 206/564 |
| Carnation, WA | 98014 | 425/564 |
| Cascade, WA | 98058 | 425/564 |
| Cedar Falls, WA | 98045 | 425/564 |
| Clyde Hill, WA | 98004 | 425/564 |
| Coal Creek, WA | 98027 | 425/564 |
| Columbia, WA | 98118 | 206/564 |
| Cottage Lake, WA | 98072 | 425/564 |
| Covington, WA | 98042 | 253/564 |
| Crown Hill, WA | 98117 | 206/564 |
| Crystal Mountain, WA | 98022 | 360/564 |
| Cumberland, WA | 98022 | 360/564 |
| Denny Creek, WA | 98045 | 425/564 |
| Des Moines, WA | 98148 | 206/564 |
| 98198 | 206/564 | |
| Dockton, WA | 98070 | 206/564 |
| Duvall, WA | 98019 | 425/564 |
| Duwamish, WA | 98188 | 206/564 |
| Earlmount, WA | 98052 | 425/564 |
| East Union, WA | 98122 | 206/564 |
| Eastgate, WA | 98006 | 425/564 |
| 98007 | 425/564 | |
| Enumclaw, WA | 98022 | 360/564 |
| Fairwood, WA | 98058 | 425/564 |
| Fall City, WA | 98024 | 425/564 |
| Federal Way, WA | 98001 | 253/564 |
| 98003 | 253/564 | |
| 98023 | 253/564 | |
| 98063 | 253/564 | |
| 98093 | 253/564 | |
| Forest Park, WA | 98155 | 206/564 |
| Fort Lawton, WA | 98199 | 206/564 |
| Four Corners, WA | 98038 | 425/564 |
| Greenwater, WA | 98022 | 360/564 |
| Greenwood, WA | 98103 | 206/564 |
| Grotto, WA | 98288 | 360/564 |
| Hazelwood, WA | 98056 | 425/564 |
| Highlands, WA | 98056 | 425/564 |
| Hobart, WA | 98025 | 360/564 |
| Houghton, WA | 98033 | 425/564 |
| Hunts Point, WA | 98004 | 425/564 |
| Inglewood, WA | 98011 | 425/564 |
| Interbay, WA | 98119 | 206/564 |
| International, WA | 98104 | 206/564 |
| Issaquah, WA | 98006 | 425/564 |
| 98027 | 425/564 | |
| 98029 | 425/564 | |
| 98075 | 425/564 | |
| Juanita, WA | 98033 | 425/564 |
| 98034 | 425/564 | |
| Kanaskat, WA | 98051 | 360/564 |
| Kenmore, WA | 98028 | 425/564 |
| Kennydale, WA | 98056 | 425/564 |
| Kent, WA | 98030 | 253/564 |
| 98031 | 253/564 | |
| 98032 | 206/564 | |
| 98035 | 253/564 | |
| 98042 | 253/564 | |
| 98064 | 253/564 | |
| 98089 | 253/564 | |
| Kingsgate, WA | 98034 | 425/564 |
| Kirkland, WA | 98033 | 425/564 |
| 98034 | 425/564 | |
| 98083 | 425/564 | |
| Krain, WA | 98022 | 360/564 |
| Lake Alice, WA | 98024 | 425/564 |
| Lake City, WA | 98125 | 206/564 |
| Lake Forest Park, WA | 98155 | 206/564 |
| Lake Joy, WA | 98014 | 425/564 |
| Lake Sawyer, WA | 98042 | 253/564 |
| Macys, WA | 98181 | 206/564 |
| Madison Park, WA | 98112 | 206/564 |
| Magnolia, WA | 98199 | 206/564 |
| Maple Valley, WA | 98038 | 425/564 |
| McMicken Heights, WA | 98188 | 206/564 |
| Medina, WA | 98039 | 425/564 |
| Mercer Island, WA | 98040 | 206/564 |
| Midway, WA | 98032 | 206/564 |
| 98089 | 253/564 | |
| Morganville, WA | 98010 | 360/564 |
| Newcastle, WA | 98056 | 425/564 |
| 98059 | 425/564 | |
| Newport Hills, WA | 98006 | 425/564 |
| Normandy Park, WA | 98148 | 206/564 |
| 98166 | 206/564 | |
| 98198 | 206/564 | |
| North Bend, WA | 98045 | 425/564 |
| North City, WA | 98155 | 206/564 |
| Northgate, WA | 98125 | 206/564 |
| Osceola, WA | 98022 | 360/564 |
| Pacific, WA | 98047 | 253/564 |
| Palmer, WA | 98051 | 360/564 |
| Pine Lake, WA | 98027 | 425/564 |
| Pioneer Square, WA | 98104 | 206/564 |
| Preston, WA | 98050 | 425/564 |
| Queen Anne, WA | 98109 | 206/564 |
| Queensgate, WA | 98011 | 425/564 |
| Qwest, WA | 98191 | 206/564 |
| Ravensdale, WA | 98051 | 360/564 |
| Redmond, WA | 98052 | 425/564 |
| 98053 | 425/564 | |
| 98073 | 425/564 | |
| 98074 | 425/564 | |
| Redondo, WA | 98054 | 253/564 |
| Redondo Beach, WA | 98198 | 206/564 |
| Reg Lib Handicapped, WA | 98129 | 206/564 |
| Renton, WA | 98055 | 425/564 |
| 98056 | 425/564 | |
| 98057 | 425/564 | |
| 98058 | 425/564 | |
| 98059 | 425/564 | |
| Richmond Beach, WA | 98160 | 206/564 |
| 98177 | 206/564 | |
| Richmond Highlands, WA | 98133 | 206/564 |
| Riverton, WA | 98188 | 206/564 |
| Safeco Plaza, WA | 98185 | 206/564 |
| Sammamish, WA | 98074 | 425/564 |
| 98075 | 425/564 | |
| Scenic, WA | 98288 | 360/564 |
| Seahurst, WA | 98062 | 206/564 |
| Seatac, WA | 98148 | 206/564 |
| 98158 | 206/564 | |
| 98168 | 206/564 | |
| 98188 | 206/564 | |
| 98198 | 206/564 | |
| Seatac Airport, WA | 98158 | 206/564 |
| Seattle, WA | 98101 | 206/564 |
| 98102 | 206/564 | |
| 98103 | 206/564 | |
| 98104 | 206/564 | |
| 98105 | 206/564 | |
| 98106 | 206/564 | |
| 98107 | 206/564 | |
| 98108 | 206/564 | |
| 98109 | 206/564 | |
| 98111 | 206/564 | |
| 98112 | 206/564 | |
| 98113 | 206/564 | |
| 98114 | 206/564 | |
| 98115 | 206/564 | |
| 98116 | 206/564 | |
| 98117 | 206/564 | |
| 98118 | 206/564 | |
| 98119 | 206/564 | |
| 98121 | 206/564 | |
| 98122 | 206/564 | |
| 98124 | 206/564 | |
| 98125 | 206/564 | |
| 98126 | 206/564 | |
| 98127 | 206/564 | |
| 98129 | 206/564 | |
| 98131 | 206/564 | |
| 98132 | 206/564 | |
| 98133 | 206/564 | |
| 98134 | 206/564 | |
| 98136 | 206/564 | |
| 98138 | 206/564 | |
| 98139 | 206/564 | |
| 98141 | 206/564 | |
| 98144 | 206/564 | |
| 98145 | 206/564 | |
| 98146 | 206/564 | |
| 98148 | 206/564 | |
| 98154 | 206/564 | |
| 98155 | 206/564 | |
| 98158 | 206/564 | |
| 98160 | 206/564 | |
| 98161 | 206/564 | |
| 98164 | 206/564 | |
| 98165 | 206/564 | |
| 98166 | 206/564 | |
| 98168 | 206/564 | |
| 98170 | 206/564 | |
| 98171 | 206/564 | |
| 98174 | 206/564 | |
| 98175 | 206/564 | |
| 98177 | 206/564 | |
| 98178 | 206/564 | |
| 98181 | 206/564 | |
| 98184 | 206/564 | |
| 98185 | 206/564 | |
| 98188 | 206/564 | |
| 98190 | 206/564 | |
| 98191 | 206/564 | |
| 98194 | 206/564 | |
| 98195 | 206/564 | |
| 98198 | 206/564 | |
| 98199 | 206/564 | |
| Seattle Naval Support Activi, WA | 98115 | 206/564 |
| Shoreline, WA | 98133 | 206/564 |
| 98155 | 206/564 | |
| 98177 | 206/564 | |
| Shorewood, WA | 98146 | 206/564 |
| Skykomish, WA | 98288 | 360/564 |
| Skyway, WA | 98178 | 206/564 |
| Snoqualmie, WA | 98065 | 425/564 |
| Spring Glen, WA | 98024 | 425/564 |
| The Highlands, WA | 98177 | 206/564 |
| Times Square, WA | 98101 | 206/564 |
| Totem Lake, WA | 98033 | 425/564 |
| 98034 | 425/564 | |
| Tukwila, WA | 98108 | 206/564 |
| 98138 | 206/564 | |
| 98168 | 206/564 | |
| 98178 | 206/564 | |
| 98188 | 206/564 | |
| University, WA | 98105 | 206/564 |
| University of Washington, WA | 98195 | 206/564 |
| Vashon, WA | 98013 | 206/564 |
| 98070 | 206/564 | |
| Vashon Island, WA | 98070 | 206/564 |
| Wabash, WA | 98022 | 360/564 |
| Wallingford, WA | 98103 | 206/564 |
| Wedgwood, WA | 98115 | 206/564 |
| West Seattle, WA | 98116 | 206/564 |
| Westwood, WA | 98136 | 206/564 |
| Westwood Village, WA | 98126 | 206/564 |
| White Center, WA | 98106 | 206/564 |
| 98146 | 206/564 | |
| Wilderness Village, WA | 98038 | 425/564 |
| Woodinville, WA | 98072 | 425/564 |
| 98077 | 425/564 | |
| Woodmont Beach, WA | 98032 | 206/564 |
| Yarrow Point, WA | 98004 | 425/564 |