Demographics Table
Demographic Data Report for Washington by County
Population: Age under 18
All Races (includes Hispanic), Both Sexes
2020-2024 American Community Survey 5-Year Data
Sorted by Percent
County
|
2023 Rural-Urban Continuum Codes Φ
|
Value (Percent)
|
People (Age Under 18)
|
Rank within US (of 3143 counties)
|
|---|---|---|---|---|
| Washington | N/A | 21.4 | 1,671,227 | 32 of 52 |
| United States | N/A | 22.0 | 73,517,834 | N/A |
| Jefferson County | Rural | 11.2 | 3,747 | 3,129 |
| San Juan County | Rural | 12.6 | 2,323 | 3,111 |
| Pacific County | Rural | 15.0 | 3,602 | 3,041 |
| Whitman County | Rural | 15.8 | 7,439 | 2,992 |
| Clallam County | Rural | 16.1 | 12,527 | 2,966 |
| Ferry County | Rural | 16.6 | 1,228 | 2,930 |
| Kittitas County | Rural | 16.7 | 7,872 | 2,918 |
| Skamania County | Urban | 16.8 | 2,081 | 2,911 |
| Island County | Rural | 17.3 | 15,049 | 2,848 |
| Wahkiakum County | Rural | 17.5 | 817 | 2,810 |
| Columbia County | Rural | 18.0 | 723 | 2,719 |
| Klickitat County | Rural | 18.2 | 4,250 | 2,692 |
| Whatcom County | Urban | 18.5 | 42,743 | 2,641 |
| Garfield County | Rural | 18.7 | 440 | 2,601 |
| Pend Oreille County | Rural | 19.3 | 2,715 | 2,459 |
| King County | Urban | 19.5 | 445,594 | 2,404 |
| Mason County | Rural | 19.5 | 13,273 | 2,404 |
| Asotin County | Urban | 19.6 | 4,400 | 2,372 |
| Grays Harbor County | Rural | 19.7 | 15,217 | 2,348 |
| Kitsap County | Urban | 19.7 | 54,706 | 2,348 |
| Walla Walla County | Urban | 20.6 | 12,787 | 2,055 |
| Skagit County | Urban | 20.9 | 27,432 | 1,936 |
| Thurston County | Urban | 20.9 | 62,380 | 1,936 |
| Stevens County | Urban | 21.1 | 10,166 | 1,869 |
| Spokane County | Urban | 21.5 | 118,285 | 1,698 |
| Lewis County | Rural | 21.6 | 18,423 | 1,650 |
| Okanogan County | Rural | 21.6 | 9,387 | 1,650 |
| Lincoln County | Rural | 21.8 | 2,505 | 1,576 |
| Snohomish County | Urban | 22.1 | 186,856 | 1,441 |
| Cowlitz County | Urban | 22.5 | 25,231 | 1,260 |
| Chelan County | Urban | 22.6 | 18,109 | 1,220 |
| Clark County | Urban | 22.7 | 117,472 | 1,174 |
| Pierce County | Urban | 23.0 | 214,038 | 1,057 |
| Douglas County | Urban | 24.4 | 10,847 | 573 |
| Benton County | Urban | 26.1 | 55,579 | 245 |
| Grant County | Rural | 28.3 | 28,798 | 121 |
| Yakima County | Urban | 28.9 | 74,398 | 102 |
| Franklin County | Urban | 30.9 | 30,565 | 50 |
| Adams County | Rural | 34.7 | 7,223 | 13 |
Notes:
Created by statecancerprofiles.cancer.gov on 03/21/2026 9:48 am.
Φ Rural–urban county classifications are based on the 2023 USDA Rural–Urban Continuum Codes (except for Connecticut Counties which use 2013 codes). State-level cancer rates for rural areas are calculated using cancer cases registered exclusively in rural counties, while state-level cancer rates for urban areas are calculated using cases registered exclusively in urban counties.
Source: Demographic data provided by the Census Bureau and the American Community Survey.
For more information about Population: Age under 18, see the dictionary.
Data for United States does not include Puerto Rico.