| Rank | Median Age ▲ | School District / Population |
| 1. | 16.90 | Paterson School District / 424 |
| 2. | 22.10 | Pullman School District / 28,738 |
| 3. | 23.80 | Lind School District / 1,267 |
| 4. | 24.00 | Ellensburg School District / 25,246 |
| 5. | 25.50 | Prescott School District / 2,082 |
| 6. | 25.70 | Wahluke School District / 6,035 |
| 7. | 25.90 | Mount Adams School District / 4,640 |
| 8. | 26.00 | Othello School District / 13,135 |
| 9. | 26.20 | Wapato School District / 13,700 |
| 9. | 26.20 | Toppenish School District / 14,708 |
| 11. | 27.20 | Granger School District / 5,716 |
| 12. | 27.40 | Grandview School District / 13,899 |
| 12. | 27.40 | Royal School District / 5,451 |
| 12. | 27.40 | Star School District / 158 |
| 12. | 27.40 | Clover Park School District / 82,672 |
| 16. | 27.90 | Sunnyside School District / 22,676 |
| 16. | 27.90 | Carbonado School District / 913 |
| 18. | 28.10 | Pasco School District / 61,209 |
| 19. | 28.40 | Mabton School District / 2,676 |
| 19. | 28.40 | North Franklin School District / 7,699 |
| 21. | 28.80 | Queets-Clearwater School District / 841 |
| 22. | 29.00 | Green Mountain School District / 898 |
| 23. | 29.90 | Brewster School District / 4,365 |
| 24. | 30.00 | Warden School District / 3,659 |
| 25. | 30.20 | Quincy School District / 11,321 |
| 26. | 30.30 | Bridgeport School District / 3,322 |
| 27. | 30.50 | Cheney School District / 30,663 |
| 28. | 30.60 | Taholah School District / 914 |
| 29. | 31.00 | Cape Flattery School District / 3,496 |
| 29. | 31.00 | Palisades School District / 364 |
| 29. | 31.00 | Yakima School District / 72,275 |
| 29. | 31.00 | Medical Lake School District / 12,346 |
| 33. | 31.20 | Moses Lake School District / 39,730 |
| 34. | 31.80 | Oak Harbor School District / 40,806 |
| 34. | 31.80 | Zillah School District / 4,671 |
| 36. | 32.20 | Bellingham School District / 99,469 |
| 37. | 32.60 | Union Gap School District / 3,170 |
| 38. | 32.70 | Mount Vernon School District / 35,549 |
| 39. | 32.80 | Tukwila School District / 15,775 |
| 40. | 33.20 | Mukilteo School District / 87,591 |
| 40. | 33.20 | Lake Stevens School District / 33,414 |
| 42. | 33.40 | Franklin Pierce School District / 50,721 |
| 43. | 33.50 | College Place School District / 12,997 |
| 44. | 33.80 | Bethel School District / 100,964 |
| 44. | 33.80 | Benge School District / 97 |
| 46. | 34.50 | Finley School District / 4,560 |
| 46. | 34.50 | Nooksack Valley School District / 8,918 |
| 48. | 34.60 | Orting School District / 13,377 |
| 49. | 34.70 | Kennewick School District / 76,586 |
| 50. | 34.90 | Deer Park School District / 10,905 |
| 51. | 35.00 | Marysville School District / 64,669 |
| 52. | 35.10 | Evergreen School District (Clark) / 137,796 |
| 52. | 35.10 | Highland School District / 5,794 |
| 52. | 35.10 | Puyallup School District / 111,173 |
| 55. | 35.20 | Wellpinit School District / 1,065 |
| 55. | 35.20 | Kent School District / 149,531 |
| 57. | 35.40 | Battle Ground School District / 61,663 |
| 58. | 35.50 | East Valley School District (Spokane) / 26,014 |
| 59. | 35.60 | Spokane Public Schools / 214,396 |
| 60. | 35.70 | Central Kitsap School District / 64,517 |
| 60. | 35.70 | Vancouver Public Schools / 142,905 |
| 60. | 35.70 | Federal Way School District / 125,274 |
| 60. | 35.70 | Everett School District / 120,218 |
| 60. | 35.70 | Renton School District / 106,434 |
| 65. | 35.80 | Camas School District / 26,281 |
| 65. | 35.80 | Prosser School District / 12,250 |
| 67. | 35.90 | Tacoma Public Schools / 206,232 |
| 67. | 35.90 | Sumner School District / 40,868 |
| 67. | 35.90 | Lake Washington School District / 168,935 |
| 70. | 36.00 | Seattle School District / 594,742 |
| 70. | 36.00 | Auburn School District / 69,423 |
| 72. | 36.10 | Sultan School District / 13,652 |
| 72. | 36.10 | Woodland School District / 11,257 |
| 74. | 36.20 | Dieringer School District / 12,374 |
| 74. | 36.20 | Yelm Community Schools / 27,640 |
| 76. | 36.40 | Bremerton School District / 42,881 |
| 76. | 36.40 | Columbia School District / 3,776 |
| 78. | 36.50 | Fife Public Schools / 18,071 |
| 78. | 36.50 | Aberdeen School District / 19,679 |
| 78. | 36.50 | Lakewood School District / 13,395 |
| 78. | 36.50 | Monroe School District / 38,226 |
| 82. | 36.60 | Chehalis School District / 14,749 |
| 83. | 36.70 | Snoqualmie Valley School District / 33,447 |
| 84. | 36.80 | Orondo School District / 1,251 |
| 85. | 36.90 | Manson School District / 3,341 |
| 85. | 36.90 | Issaquah School District / 91,043 |
| 85. | 36.90 | Nespelem School District / 1,075 |
| 88. | 37.00 | Mary M. Knight School District / 1,765 |
| 88. | 37.00 | Walla Walla School District / 36,160 |
| 88. | 37.00 | Granite Falls School District / 11,531 |
| 91. | 37.10 | Kittitas School District / 3,351 |
| 91. | 37.10 | Olympia School District / 60,205 |
| 91. | 37.10 | Tahoma School District / 37,996 |
| 91. | 37.10 | Centralia School District / 22,697 |
| 95. | 37.20 | Northshore School District / 117,545 |
| 95. | 37.20 | Ephrata School District / 10,901 |
| 95. | 37.20 | East Valley School District (Yakima) / 16,427 |
| 98. | 37.30 | Riverview School District / 17,521 |
| 98. | 37.30 | Steilacoom Historical School District / 18,884 |
| 98. | 37.30 | McCleary School District / 2,083 |
| 98. | 37.30 | University Place School District / 27,928 |
| 102. | 37.40 | Selah School District / 18,033 |
| 103. | 37.50 | Rochester School District / 12,733 |
| 103. | 37.50 | Eastmont School District / 28,012 |
| 103. | 37.50 | Mount Baker School District / 13,534 |
| 106. | 37.60 | Mead School District / 49,352 |
| 106. | 37.60 | Cashmere School District / 7,574 |
| 108. | 37.70 | Kelso School District / 28,291 |
| 109. | 37.80 | Meridian School District / 8,639 |
| 109. | 37.80 | Central Valley School District / 72,736 |
| 111. | 37.90 | Edmonds School District / 151,150 |
| 111. | 37.90 | North Thurston Public Schools / 88,179 |
| 113. | 38.00 | Washougal School District / 18,306 |
| 113. | 38.00 | Hoquiam School District / 11,494 |
| 113. | 38.00 | Richland School District / 59,223 |
| 116. | 38.10 | Snohomish School District / 51,492 |
| 116. | 38.10 | Ferndale School District / 29,518 |
| 116. | 38.10 | Highline School District / 119,366 |
| 119. | 38.20 | Wenatchee School District / 40,702 |
| 120. | 38.40 | Sedro-Woolley School District / 26,621 |
| 120. | 38.40 | Hockinson School District / 7,882 |
| 122. | 38.50 | Shelton School District / 23,469 |
| 122. | 38.50 | Kahlotus School District / 259 |
| 124. | 38.60 | Tenino School District / 9,536 |
| 125. | 38.70 | Onalaska School District / 5,164 |
| 125. | 38.70 | Klickitat School District / 557 |
| 125. | 38.70 | White River School District / 24,836 |
| 125. | 38.70 | Bellevue School District / 123,233 |
| 129. | 38.80 | Lynden School District / 17,092 |
| 129. | 38.80 | Longview Public Schools / 44,303 |
| 131. | 38.90 | Davenport School District / 2,972 |
| 131. | 38.90 | Inchelium School District / 1,249 |
| 133. | 39.10 | Burlington-Edison School District / 20,655 |
| 133. | 39.10 | Tumwater School District / 35,007 |
| 133. | 39.10 | Touchet School District / 911 |
| 136. | 39.30 | Centerville School District / 814 |
| 137. | 39.40 | South Kitsap School District / 65,662 |
| 138. | 39.50 | Arlington School District / 28,726 |
| 138. | 39.50 | La Center School District / 7,670 |
| 140. | 39.60 | Colfax School District / 4,163 |
| 141. | 39.70 | Waterville School District / 1,588 |
| 142. | 39.80 | Ocosta School District / 7,948 |
| 142. | 39.80 | Quillayute Valley School District / 6,408 |
| 142. | 39.80 | Easton School District / 942 |
| 145. | 39.90 | Liberty School District / 4,253 |
| 146. | 40.00 | Elma School District / 9,726 |
| 147. | 40.20 | Rosalia School District / 1,081 |
| 148. | 40.30 | Satsop School District / 630 |
| 148. | 40.30 | Oakville School District / 2,142 |
| 148. | 40.30 | Mary Walker School District / 2,680 |
| 151. | 40.40 | West Valley School District / 15,986 |
| 152. | 40.50 | Eatonville School District / 10,797 |
| 153. | 40.90 | Naches Valley School District / 7,929 |
| 154. | 41.00 | West Valley School District / 26,857 |
| 154. | 41.00 | Southside School District / 2,069 |
| 156. | 41.10 | Okanogan School District / 5,553 |
| 157. | 41.20 | Keller School District / 484 |
| 158. | 41.30 | Kiona-Benton School District / 7,969 |
| 159. | 41.40 | Adna School District / 3,853 |
| 159. | 41.40 | Cascade School District / 9,492 |
| 159. | 41.40 | Mill A School District / 649 |
| 162. | 41.50 | North Kitsap School District / 43,472 |
| 163. | 41.60 | Enumclaw School District / 26,162 |
| 164. | 41.70 | Waitsburg School District / 1,513 |
| 164. | 41.70 | Clarkston School District / 18,734 |
| 164. | 41.70 | Stevenson-Carson School District / 6,225 |
| 164. | 41.70 | Ridgefield School District / 12,947 |
| 168. | 41.90 | Northport School District / 1,423 |
| 169. | 42.00 | Cusick School District / 2,431 |
| 170. | 42.10 | Nine Mile Falls School District / 8,097 |
| 171. | 42.40 | Great Northern School District / 870 |
| 172. | 42.50 | Toledo School District / 4,004 |
| 172. | 42.50 | Kalama School District / 5,055 |
| 172. | 42.50 | North River School District / 348 |
| 175. | 42.70 | Rainier School District / 4,968 |
| 175. | 42.70 | Oroville School District / 4,507 |
| 175. | 42.70 | Omak School District / 10,520 |
| 178. | 42.80 | Shoreline School District / 64,783 |
| 178. | 42.80 | Riverside School District / 11,420 |
| 180. | 42.90 | Palouse School District / 1,308 |
| 180. | 42.90 | Raymond School District / 3,954 |
| 182. | 43.00 | Goldendale School District / 7,721 |
| 183. | 43.10 | Montesano School District / 7,879 |
| 184. | 43.30 | Freeman School District / 3,933 |
| 184. | 43.30 | Napavine School District / 4,041 |
| 184. | 43.30 | Entiat School District / 2,127 |
| 187. | 43.40 | Conway School District / 2,932 |
| 187. | 43.40 | Cosmopolis School District / 1,673 |
| 187. | 43.40 | Glenwood School District / 556 |
| 187. | 43.40 | Toutle Lake School District / 4,024 |
| 191. | 43.50 | Selkirk School District / 2,283 |
| 192. | 43.80 | Tonasket School District / 6,639 |
| 193. | 43.90 | Winlock School District / 4,370 |
| 194. | 44.00 | Castle Rock School District / 9,705 |
| 194. | 44.00 | Skamania School District / 1,307 |
| 194. | 44.00 | Concrete School District / 4,995 |
| 197. | 44.10 | Naselle-Grays River Valley School District / 2,412 |
| 197. | 44.10 | Boistfort School District / 1,010 |
| 199. | 44.30 | Blaine School District / 15,588 |
| 199. | 44.30 | Asotin-Anatone School District / 2,518 |
| 199. | 44.30 | North Mason School District / 12,293 |
| 202. | 44.40 | Soap Lake School District / 2,688 |
| 203. | 44.50 | Port Angeles School District / 30,283 |
| 204. | 44.70 | Pe Ell School District / 1,440 |
| 205. | 44.80 | Sprague School District / 699 |
| 205. | 44.80 | Peninsula School District / 54,059 |
| 207. | 44.90 | Summit Valley School District / 802 |
| 208. | 45.00 | Republic School District / 3,358 |
| 209. | 45.10 | Pateros School District / 1,429 |
| 209. | 45.10 | Stanwood-Camano School District / 31,405 |
| 209. | 45.10 | Mount Pleasant School District / 401 |
| 209. | 45.10 | Reardan-Edwall School District / 4,014 |
| 213. | 45.20 | Garfield School District / 692 |
| 213. | 45.20 | Colville School District / 11,924 |
| 215. | 45.30 | Pioneer School District / 9,648 |
| 215. | 45.30 | Odessa School District / 1,675 |
| 217. | 45.40 | Evaline School District / 1,006 |
| 217. | 45.40 | Thorp School District / 1,529 |
| 217. | 45.40 | Tekoa School District / 1,283 |
| 220. | 45.70 | Lyle School District / 2,666 |
| 220. | 45.70 | Wishkah Valley School District / 836 |
| 222. | 45.80 | Colton School District / 949 |
| 222. | 45.80 | Mercer Island School District / 23,791 |
| 222. | 45.80 | White Salmon Valley School District / 6,096 |
| 222. | 45.80 | Trout Lake School District / 968 |
| 226. | 46.00 | Grand Coulee Dam School District / 4,565 |
| 226. | 46.00 | Bainbridge Island School District / 21,923 |
| 228. | 46.10 | South Bend School District / 2,838 |
| 228. | 46.10 | Coulee-Hartline School District / 1,392 |
| 230. | 46.40 | Valley School District / 1,306 |
| 230. | 46.40 | Wilbur School District / 1,472 |
| 230. | 46.40 | Ritzville School District / 2,452 |
| 233. | 46.60 | Steptoe School District / 370 |
| 233. | 46.60 | Quilcene School District / 1,808 |
| 235. | 46.80 | Mansfield School District / 526 |
| 236. | 46.90 | Griffin School District / 4,984 |
| 237. | 47.10 | Lamont School District / 219 |
| 237. | 47.10 | Curlew School District / 1,525 |
| 239. | 47.20 | Chewelah School District / 5,134 |
| 240. | 47.30 | Dayton School District / 3,694 |
| 241. | 47.50 | Washtucna School District / 236 |
| 241. | 47.50 | Morton School District / 2,855 |
| 243. | 47.60 | Lake Quinault School District / 964 |
| 243. | 47.60 | Darrington School District / 2,710 |
| 245. | 47.70 | Kettle Falls School District / 5,048 |
| 245. | 47.70 | Columbia School District / 1,090 |
| 247. | 47.80 | Dixie School District / 463 |
| 248. | 47.90 | Oakesdale School District / 748 |
| 249. | 48.00 | Anacortes School District / 20,949 |
| 249. | 48.00 | Lake Chelan School District / 7,500 |
| 249. | 48.00 | Mossyrock School District / 3,514 |
| 252. | 48.20 | Index School District / 510 |
| 253. | 48.40 | Roosevelt School District / 145 |
| 253. | 48.40 | Bickleton School District / 452 |
| 253. | 48.40 | Orchard Prairie School District / 778 |
| 256. | 48.50 | Almira School District / 374 |
| 257. | 48.70 | Harrington School District / 715 |
| 258. | 48.90 | Pomeroy School District / 2,075 |
| 259. | 49.00 | Cle Elum-Roslyn School District / 6,643 |
| 260. | 49.10 | White Pass School District / 3,599 |
| 260. | 49.10 | Wishram School District / 481 |
| 262. | 49.30 | Wilson Creek School District / 499 |
| 263. | 49.60 | Damman School District / 717 |
| 264. | 49.90 | Orient School District / 785 |
| 265. | 50.10 | Newport School District / 7,384 |
| 266. | 50.20 | Vashon Island School District / 10,425 |
| 266. | 50.20 | Endicott School District / 582 |
| 268. | 50.40 | Wahkiakum School District / 3,106 |
| 269. | 50.50 | Crescent School District / 2,662 |
| 270. | 50.70 | Name N/A / 4,812 |
| 271. | 50.80 | La Conner School District / 4,399 |
| 271. | 50.80 | LaCrosse School District / 694 |
| 273. | 51.00 | Chimacum School District / 11,253 |
| 274. | 51.60 | San Juan Island School District / 7,920 |
| 274. | 51.60 | Methow Valley School District / 4,145 |
| 276. | 51.70 | Orcas Island School District / 4,622 |
| 277. | 51.90 | Grapeview School District / 2,291 |
| 278. | 52.30 | South Whidbey School District / 15,072 |
| 279. | 52.60 | Onion Creek School District / 310 |
| 279. | 52.60 | Willapa Valley School District / 2,203 |
| 281. | 52.80 | Coupeville School District / 9,217 |
| 282. | 53.10 | Evergreen School District (Stevens) / 347 |
| 283. | 53.20 | Lopez School District / 2,442 |
| 284. | 53.40 | Skykomish School District / 406 |
| 285. | 54.20 | Port Townsend School District / 13,822 |
| 286. | 54.40 | Ocean Beach School District / 9,706 |
| 287. | 54.60 | North Beach School District / 6,566 |
| 287. | 54.60 | St. John School District / 1,085 |
| 289. | 55.10 | Creston School District / 1,209 |
| 290. | 55.30 | Loon Lake School District / 1,563 |
| 291. | 55.60 | Sequim School District / 27,722 |
| 292. | 55.70 | Shaw Island School District / 311 |
| 293. | 56.00 | Stehekin School District / 26 |
| 293. | 56.00 | Hood Canal School District / 4,510 |
| 295. | 58.80 | Brinnon School District / 1,136 |
| 296. | 60.90 | Starbuck School District / 183 |
Please note that we only rank locations with 'Median Age' data. The rank above might not be a complete list. Locations without 'Median Age' data are not listed.
*ACS stands for U.S. Census American Community Survey. According to the U.S. Census, if the date is a range, you can interpret the data as an average of the period of time.
