| City Name | County Name: | Population | Median Age |
| Aberdeen | Grays Harbor | 29,609 | 36.2 |
| Ahtanum | Yakima | 3,356 | 37.6 |
| Airway Heights | Spokane | 9,485 | 33.1 |
| Alderton | Pierce | 2,890 | 45.4 |
| Alderwood Manor | Snohomish | 9,579 | 37.3 |
| Algona | King | 3,208 | 31 |
| Allyn | Mason | 2,414 | 46.7 |
| Amboy | Clark | 1,875 | 27.1 |
| Ames Lake | King | 1,556 | 47.3 |
| Anacortes | Skagit | 18,563 | 48.6 |
| Anderson Island | Pierce | 1,181 | 59.4 |
| Arlington | Snohomish | 20,523 | 38.4 |
| Arlington Heights | Snohomish | 2,410 | 50.1 |
| Artondale | Pierce | 13,364 | 44 |
| Asotin | Asotin | 1,289 | 47.8 |
| Auburn | King | 81,464 | 35.5 |
| Bainbridge Island | Kitsap | 25,298 | 50.3 |
| Bangor Base | Kitsap | 6,506 | 22.7 |
| Barberton | Clark | 6,981 | 44.8 |
| Basin City | Franklin | 1,209 | 22.9 |
| Battle Ground | Clark | 21,252 | 32 |
| Belfair | Mason | 4,564 | 37.5 |
| Bellevue | King | 148,164 | 37.7 |
| Bellingham | Whatcom | 130,641 | 31.5 |
| Benton City | Benton | 4,763 | 35.5 |
| Bethel | Kitsap | 3,851 | 39.4 |
| Big Lake | Skagit | 1,774 | 50.2 |
| Birch Bay | Whatcom | 9,323 | 51.9 |
| Black Diamond | King | 4,781 | 42 |
| Blaine | Whatcom | 5,607 | 45.5 |
| Bonney Lake | Pierce | 21,148 | 35.3 |
| Bothell | King | 47,415 | 37.1 |
| Bothell East | Snohomish | 11,665 | 34 |
| Bothell West | Snohomish | 21,115 | 36.3 |
| Boulevard Park | King | 3,717 | 35.6 |
| Bremerton | Kitsap | 218,400 | 33 |
| Brewster | Okanogan | 2,357 | 24.8 |
| Bridgeport | Douglas | 2,613 | 27.4 |
| Brier | Snohomish | 6,970 | 47 |
| Browns Point | Pierce | 1,104 | 53.6 |
| Brush Prairie | Clark | 2,636 | 42.7 |
| Bryant | Snohomish | 1,817 | 48.1 |
| Bryn Mawr-Skyway | King | 18,414 | 38.9 |
| Buckley | Pierce | 5,058 | 36.7 |
| Buena | Yakima | 1,084 | 19.4 |
| Bunk Foss | Snohomish | 3,939 | 42.6 |
| Burbank | Walla Walla | 3,358 | 41.4 |
| Burien | King | 51,500 | 37.9 |
| Burley | Kitsap | 2,304 | 35.1 |
| Burlington | Skagit | 9,224 | 35.2 |
| Camano | Island | 17,042 | 54.7 |
| Camas | Clark | 24,418 | 40.2 |
| Canterwood | Pierce | 3,218 | 53 |
| Canyon Creek | Snohomish | 3,433 | 40.8 |
| Carnation | King | 2,282 | 40.9 |
| Carson | Skamania | 2,830 | 35.6 |
| Cascade Valley | Grant | 1,673 | 54.8 |
| Cashmere | Chelan | 4,893 | 38.5 |
| Castle Rock | Cowlitz | 2,914 | 31.5 |
| Cathcart | Snohomish | 2,426 | 55 |
| Cavalero | Snohomish | 5,370 | 36.5 |
| Central Park | Grays Harbor | 3,205 | 42.8 |
| Centralia | Lewis | 42,922 | 37.8 |
| Chain Lake | Snohomish | 4,522 | 42.5 |
| Chehalis | Lewis | 7,654 | 33.6 |
| Chelan | Chelan | 6,212 | 42.2 |
| Cheney | Spokane | 12,522 | 23.1 |
| Chewelah | Stevens | 2,676 | 48.8 |
| Chico | Kitsap | 2,846 | 42.3 |
| Clarkston | Asotin | 7,375 | 36.1 |
| Clarkston Heights-Vineland | Asotin | 6,348 | 51.7 |
| Cle Elum | Kittitas | 3,851 | 37.3 |
| Clear Lake | Pierce | 1,126 | 38.9 |
| Clearview | Snohomish | 3,630 | 40 |
| Clover Creek | Pierce | 6,734 | 41 |
| Clyde Hill | King | 3,386 | 45.7 |
| Colfax | Whitman | 2,872 | 48.1 |
| College Place | Walla Walla | 9,317 | 35 |
| Colville | Stevens | 5,135 | 43.5 |
| Connell | Franklin | 5,545 | 35 |
| Cosmopolis | Grays Harbor | 1,662 | 43.9 |
| Cottage Lake | King | 22,677 | 44.9 |
| Coulee Dam | Okanogan | 1,080 | 42.3 |
| Country Homes | Spokane | 6,117 | 22.5 |
| Coupeville | Island | 1,972 | 63.8 |
| Covington | King | 21,175 | 38.3 |
| Crocker | Pierce | 1,196 | 36.8 |
| Dallesport | Klickitat | 1,515 | 42.6 |
| Darrington | Snohomish | 1,421 | 47.5 |
| Dash Point | Pierce | 1,105 | 47.6 |
| Davenport | Lincoln | 1,744 | 44.5 |
| Dayton | Columbia | 2,592 | 52.2 |
| Deer Park | Spokane | 4,364 | 33.8 |
| Des Moines | King | 32,348 | 40.5 |
| Desert Aire | Grant | 2,712 | 37.1 |
| Duluth | Clark | 1,314 | 49.8 |
| DuPont | Pierce | 9,516 | 31.7 |
| Duvall | King | 8,107 | 37 |
| East Port Orchard | Kitsap | 5,407 | 33.6 |
| East Renton Highlands | King | 11,842 | 44.4 |
| East Wenatchee | Douglas | 14,219 | 33 |
| Eastmont | Snohomish | 21,733 | 39 |
| Eatonville | Pierce | 3,073 | 35.3 |
| Edgewood | Pierce | 13,053 | 41.7 |
| Edmonds | Snohomish | 42,605 | 45.9 |
| Electric City | Grant | 1,002 | 56 |
| Elk Plain | Pierce | 15,167 | 37.5 |
| Ellensburg | Kittitas | 24,377 | 23.5 |
| Elma | Grays Harbor | 3,351 | 40.8 |
| Enetai | Kitsap | 1,921 | 38.4 |
| Entiat | Chelan | 1,280 | 42.1 |
| Enumclaw | King | 12,190 | 39.2 |
| Ephrata | Grant | 8,136 | 34.4 |
| Esperance | Snohomish | 4,204 | 40.6 |
| Everett | Snohomish | 111,475 | 36.1 |
| Everson | Whatcom | 4,957 | 31 |
| Fairchild AFB | Spokane | 3,336 | 22.7 |
| Fairwood | King | 19,962 | 38.2 |
| Fall City | King | 2,426 | 40.5 |
| Federal Way | King | 96,289 | 35.8 |
| Felida | Clark | 8,959 | 42.8 |
| Fern Prairie | Clark | 1,958 | 44.6 |
| Ferndale | Whatcom | 14,897 | 36.9 |
| Fife | Pierce | 10,184 | 31.9 |
| Fife Heights | Pierce | 2,368 | 35.5 |
| Finley | Benton | 6,021 | 37.2 |
| Fircrest | Pierce | 6,835 | 40 |
| Five Corners | Clark | 18,908 | 36.3 |
| Fobes Hill | Snohomish | 2,984 | 46.3 |
| Fords Prairie | Lewis | 2,662 | 39.5 |
| Forks | Clallam | 4,327 | 32.3 |
| Fort Lewis | Pierce | 13,054 | 22.5 |
| Fox Island | Pierce | 3,918 | 47.5 |
| Frederickson | Pierce | 22,994 | 32.6 |
| Freeland | Island | 2,154 | 56.4 |
| Friday Harbor | San Juan | 2,562 | 40.6 |
| Garrett | Walla Walla | 1,280 | 51.3 |
| Geneva | Whatcom | 2,460 | 38.7 |
| Gig Harbor | Pierce | 10,717 | 44.3 |
| Gleed | Yakima | 2,808 | 46.2 |
| Gold Bar | Snohomish | 2,352 | 45.4 |
| Goldendale | Klickitat | 3,505 | 41.2 |
| Graham | Pierce | 28,976 | 35 |
| Grand Coulee | Grant | 1,048 | 46.8 |
| Grand Mound | Thurston | 3,373 | 33.8 |
| Grandview | Yakima | 18,772 | 27.3 |
| Granger | Yakima | 3,830 | 24.3 |
| Granite Falls | Snohomish | 7,713 | 33.3 |
| Hansville | Kitsap | 3,413 | 61.8 |
| Hazel Dell | Clark | 21,196 | 37.5 |
| High Bridge | Snohomish | 3,148 | 46.4 |
| Hobart | King | 7,262 | 42.8 |
| Hockinson | Clark | 5,355 | 45.6 |
| Home | Pierce | 1,477 | 54.6 |
| Hoquiam | Grays Harbor | 8,655 | 43.2 |
| Indianola | Kitsap | 3,524 | 44.5 |
| Issaquah | King | 39,509 | 37.6 |
| Kalama | Cowlitz | 3,951 | 42.1 |
| Kayak Point | Snohomish | 1,704 | 52.5 |
| Kelso | Cowlitz | 12,417 | 35.2 |
| Kenmore | King | 23,097 | 39.2 |
| Kennewick | Benton | 240,735 | 33.7 |
| Kent | King | 132,319 | 34.2 |
| Kettle Falls | Stevens | 1,635 | 43.8 |
| Key Center | Pierce | 3,806 | 44.8 |
| Kingston | Kitsap | 2,193 | 52.7 |
| Kirkland | King | 93,010 | 37.4 |
| Kittitas | Kittitas | 1,497 | 32.2 |
| La Center | Clark | 3,404 | 39.6 |
| La Conner | Skagit | 3,512 | 57.5 |
| Lacey | Thurston | 52,592 | 35.2 |
| Lake Cassidy | Snohomish | 3,602 | 45.6 |
| Lake Forest Park | King | 13,504 | 43.9 |
| Lake Goodwin | Snohomish | 3,775 | 49.4 |
| Lake Holm | King | 3,331 | 51.1 |
| Lake Marcel-Stillwater | King | 1,360 | 47.9 |
| Lake Morton-Berrydale | King | 11,001 | 42.7 |
| Lake Shore | Clark | 7,599 | 40.5 |
| Lake Stevens | Snohomish | 33,911 | 34.7 |
| Lake Stickney | Snohomish | 10,230 | 33 |
| Lake Tapps | Pierce | 12,838 | 41.2 |
| Lakeland North | King | 12,867 | 38.6 |
| Lakeland South | King | 13,434 | 39.7 |
| Lakeview | Grant | 1,044 | 45.2 |
| Lakewood | Pierce | 61,037 | 35.7 |
| Langley | Island | 1,140 | 64.3 |
| Larch Way | Snohomish | 3,851 | 39.1 |
| Leavenworth | Chelan | 3,389 | 38.6 |
| Lewisville | Clark | 1,721 | 48.3 |
| Liberty Lake | Spokane | 10,956 | 37.8 |
| Lochsloy | Snohomish | 2,973 | 45.6 |
| Lofall | Kitsap | 1,973 | 54.3 |
| Long Beach | Pacific | 1,496 | 52.2 |
| Longbranch | Pierce | 3,974 | 38 |
| Longview | Cowlitz | 67,081 | 41.1 |
| Longview Heights | Cowlitz | 3,803 | 38.7 |
| Lynden | Whatcom | 18,512 | 39.2 |
| Lynnwood | Snohomish | 39,141 | 40.2 |
| Mabton | Yakima | 2,514 | 25.7 |
| Maltby | Snohomish | 11,972 | 44.9 |
| Manchester | Kitsap | 5,673 | 38.5 |
| Manson | Chelan | 1,336 | 52.3 |
| Maple Heights-Lake Desire | King | 3,641 | 46.5 |
| Maple Valley | King | 27,202 | 35.2 |
| Maplewood | Pierce | 5,072 | 53 |
| Marietta-Alderwood | Whatcom | 4,086 | 41.7 |
| Martha Lake | Snohomish | 21,129 | 34.2 |
| Marysville | Snohomish | 170,009 | 35.7 |
| Mattawa | Grant | 5,349 | 23.4 |
| McChord AFB | Pierce | 3,381 | 22.7 |
| McCleary | Grays Harbor | 1,764 | 37.3 |
| McMillin | Pierce | 1,551 | 50.2 |
| Mead | Spokane | 7,114 | 46.1 |
| Meadow Glade | Clark | 2,859 | 43.4 |
| Meadowdale | Snohomish | 3,151 | 41.3 |
| Medical Lake | Spokane | 4,966 | 32.4 |
| Medina | King | 3,288 | 46.8 |
| Mercer Island | King | 25,894 | 46 |
| Midland | Pierce | 10,005 | 35.4 |
| Mill Creek | Snohomish | 20,897 | 38.3 |
| Mill Creek East | Snohomish | 24,291 | 35.1 |
| Millwood | Spokane | 1,800 | 44 |
| Milton | Pierce | 8,299 | 38.8 |
| Minnehaha | Clark | 12,353 | 35.9 |
| Mirrormont | King | 3,780 | 44.8 |
| Monroe | Snohomish | 19,776 | 34 |
| Monroe North | Snohomish | 1,738 | 38.4 |
| Montesano | Grays Harbor | 8,685 | 43.4 |
| Morton | Lewis | 1,199 | 45.4 |
| Moses Lake | Grant | 39,002 | 32.2 |
| Moses Lake North | Grant | 4,526 | 28.5 |
| Mount Vernon | Skagit | 71,422 | 35.3 |
| Mount Vista | Clark | 9,544 | 40.8 |
| Mountlake Terrace | Snohomish | 21,338 | 37.3 |
| Moxee | Yakima | 4,104 | 28.3 |
| Mukilteo | Snohomish | 21,441 | 44.4 |
| Napavine | Lewis | 2,001 | 34.3 |
| Navy Yard City | Kitsap | 3,064 | 33.5 |
| Neah Bay | Clallam | 1,049 | 27.6 |
| Newcastle | King | 12,292 | 39 |
| Newport | Pend Oreille | 2,708 | 51.6 |
| Nooksack | Whatcom | 1,631 | 27.9 |
| Normandy Park | King | 6,604 | 51.9 |
| North Bend | King | 7,423 | 39.7 |
| North Bonneville | Skamania | 1,007 | 43.7 |
| North Fort Lewis | Pierce | 6,355 | 23.4 |
| North Lynnwood | Snohomish | 23,620 | 32.4 |
| North Puyallup | Pierce | 1,930 | 48.5 |
| North Yelm | Thurston | 3,365 | 39.5 |
| Oak Harbor | Island | 35,228 | 29.7 |
| Ocean Park | Pacific | 1,745 | 59.7 |
| Ocean Shores | Grays Harbor | 6,494 | 62 |
| Okanogan | Okanogan | 2,588 | 37.2 |
| Olympia | Thurston | 200,915 | 38.4 |
| Omak | Okanogan | 8,114 | 35.2 |
| Orchards | Clark | 24,335 | 33.8 |
| Oroville | Okanogan | 1,675 | 37.6 |
| Orting | Pierce | 8,610 | 35.2 |
| Othello | Adams | 12,761 | 25.8 |
| Otis Orchards-East Farms | Spokane | 6,466 | 41.4 |
| Pacific | King | 7,178 | 30.9 |
| Palouse | Whitman | 1,075 | 49.9 |
| Parkland | Pierce | 37,303 | 32.5 |
| Parkwood | Kitsap | 7,113 | 36.7 |
| Pasco | Franklin | 75,432 | 29.5 |
| Peaceful Valley | Whatcom | 4,123 | 33.8 |
| Picnic Point | Snohomish | 9,064 | 43.6 |
| Point Roberts | Whatcom | 1,116 | 57.7 |
| Pomeroy | Garfield | 1,395 | 46.3 |
| Port Angeles | Clallam | 24,293 | 38.9 |
| Port Angeles East | Clallam | 3,231 | 49.4 |
| Port Hadlock-Irondale | Jefferson | 3,219 | 49.5 |
| Port Ludlow | Jefferson | 2,828 | 67.6 |
| Port Orchard | Kitsap | 14,597 | 35.7 |
| Port Townsend | Jefferson | 9,831 | 53.9 |
| Poulsbo | Kitsap | 11,168 | 42.5 |
| Prairie Heights | Pierce | 4,187 | 35 |
| Prairie Ridge | Pierce | 11,994 | 37.9 |
| Prosser | Benton | 6,380 | 37.2 |
| Puget Island | Wahkiakum | 1,118 | 58.9 |
| Pullman | Whitman | 34,506 | 22.2 |
| Purdy | Pierce | 1,439 | 45.9 |
| Puyallup | Pierce | 42,361 | 39.9 |
| Quincy | Grant | 8,313 | 24.3 |
| Rainier | Thurston | 2,287 | 37.2 |
| Ravensdale | King | 1,773 | 41 |
| Raymond | Pacific | 4,241 | 49.5 |
| Redmond | King | 71,929 | 34.5 |
| Renton | King | 101,751 | 36.2 |
| Republic | Ferry | 1,066 | 45.2 |
| Richland | Benton | 58,225 | 36.9 |
| Ridgefield | Clark | 9,153 | 35.1 |
| Ritzville | Adams | 1,654 | 44.7 |
| Riverbend | King | 2,562 | 41.9 |
| Rochester | Thurston | 3,126 | 37.3 |
| Rock Island | Douglas | 1,124 | 31.3 |
| Rocky Point | Kitsap | 1,596 | 50.7 |
| Rosedale | Pierce | 4,472 | 42.4 |
| Royal City | Grant | 2,237 | 25.1 |
| Salmon Creek | Clark | 20,956 | 43 |
| Sammamish | King | 65,892 | 38.7 |
| SeaTac | King | 29,044 | 35.3 |
| Seattle | King | 3,789,220 | 35.3 |
| Sedro-Woolley | Skagit | 12,072 | 33.2 |
| Selah | Yakima | 8,087 | 33.1 |
| Sequim | Clallam | 22,304 | 56.5 |
| Shadow Lake | King | 2,434 | 51.2 |
| Shelton | Mason | 20,264 | 36 |
| Shoreline | King | 57,027 | 41.8 |
| Silver Firs | Snohomish | 22,358 | 36.8 |
| Silverdale | Kitsap | 21,677 | 36 |
| Sisco Heights | Snohomish | 2,754 | 42.6 |
| Snohomish | Snohomish | 10,154 | 37.1 |
| Snoqualmie | King | 26,289 | 35 |
| Soap Lake | Grant | 1,603 | 42.5 |
| South Bend | Pacific | 1,698 | 43.8 |
| South Creek | Pierce | 2,636 | 45.3 |
| South Hill | Pierce | 60,172 | 34.6 |
| South Wenatchee | Chelan | 1,821 | 36.5 |
| Southworth | Kitsap | 2,224 | 48.4 |
| Spanaway | Pierce | 32,575 | 33.8 |
| Spokane | Spokane | 412,275 | 36.2 |
| Spokane Valley | Spokane | 101,060 | 37.9 |
| Stansberry Lake | Pierce | 2,634 | 32.6 |
| Stanwood | Snohomish | 7,354 | 33 |
| Steilacoom | Pierce | 6,390 | 42 |
| Stevenson | Skamania | 1,601 | 44.1 |
| Sudden Valley | Whatcom | 8,072 | 42.6 |
| Sultan | Snohomish | 9,246 | 37.4 |
| Sumas | Whatcom | 1,534 | 31.1 |
| Summit | Pierce | 8,946 | 44.2 |
| Summit View | Pierce | 8,475 | 33 |
| Sumner | Pierce | 10,427 | 34.8 |
| Sunnyside | Yakima | 18,352 | 25.4 |
| Sunnyslope | Chelan | 3,704 | 47.1 |
| Suquamish | Kitsap | 4,395 | 45.6 |
| Swede Heaven | Snohomish | 1,297 | 44.4 |
| Tacoma | Pierce | 217,827 | 35.7 |
| Tanglewilde | Thurston | 7,270 | 34.4 |
| Tenino | Thurston | 1,865 | 35.8 |
| Terrace Heights | Yakima | 8,507 | 39.6 |
| Three Lakes | Snohomish | 3,480 | 45.1 |
| Tieton | Yakima | 1,308 | 27.5 |
| Tonasket | Okanogan | 1,121 | 38.5 |
| Toppenish | Yakima | 14,284 | 27.8 |
| Town and Country | Spokane | 5,090 | 38.9 |
| Tracyton | Kitsap | 5,556 | 37.7 |
| Tukwila | King | 20,347 | 35 |
| Tumwater | Thurston | 24,024 | 37.2 |
| Union Gap | Yakima | 6,200 | 34 |
| Union Hill-Novelty Hill | King | 21,992 | 43.1 |
| University Place | Pierce | 34,001 | 37.3 |
| Vancouver | Clark | 184,463 | 36.9 |
| Vashon | King | 10,291 | 54.2 |
| Venersborg | Clark | 4,227 | 39.9 |
| Waitsburg | Walla Walla | 1,231 | 41.6 |
| Walla Walla | Walla Walla | 57,860 | 35.7 |
| Walla Walla East | Walla Walla | 2,015 | 45.7 |
| Waller | Pierce | 7,647 | 46.9 |
| Wapato | Yakima | 7,627 | 25.8 |
| Warden | Grant | 2,812 | 28.2 |
| Warm Beach | Snohomish | 2,603 | 51 |
| Washougal | Clark | 16,107 | 39.4 |
| Waterville | Douglas | 1,213 | 43.5 |
| Wauna | Pierce | 4,294 | 47.7 |
| Wenatchee | Chelan | 72,350 | 35.5 |
| West Clarkston-Highland | Asotin | 5,830 | 45 |
| West Pasco | Franklin | 1,731 | 33.3 |
| West Richland | Benton | 15,075 | 36.6 |
| Westport | Grays Harbor | 2,100 | 49.7 |
| Whidbey Island Station | Island | 2,371 | 22.6 |
| White Center | King | 15,834 | 35.2 |
| White Salmon | Klickitat | 2,691 | 44.7 |
| Wilderness Rim | King | 1,633 | 37.4 |
| Winlock | Lewis | 1,428 | 31.3 |
| Wollochet | Pierce | 6,365 | 49.1 |
| Woodinville | King | 13,263 | 37.6 |
| Woodland | Cowlitz | 6,911 | 33.6 |
| Woods Creek | Snohomish | 5,706 | 40.1 |
| Woodway | Snohomish | 1,391 | 49.3 |
| Yacolt | Clark | 1,796 | 27.1 |
| Yakima | Yakima | 133,191 | 33.8 |
| Yarrow Point | King | 1,149 | 50 |
| Yelm | Thurston | 17,103 | 28.5 |
| Zillah | Yakima | 3,140 | 39.4 |