Interpretation of Demographics Data
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
Washington
- 2023 Rural-Urban Continuum Codes Φ : N/A
- Value (Percent) : The value is 21.4 percent.
- People (Age Under 18) : The number of people (age under 18) is 1,671,227.
- Rank within US : This county is ranked 32 of 52
United States
- 2023 Rural-Urban Continuum Codes Φ : N/A
- Value (Percent) : The value is 22.0 percent.
- People (Age Under 18) : The number of people (age under 18) is 73,517,834.
- Rank within US : N/A
Jefferson County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 11.2 percent.
- People (Age Under 18) : The number of people (age under 18) is 3,747.
- Rank within US : This county is ranked 3129 of 3143
San Juan County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 12.6 percent.
- People (Age Under 18) : The number of people (age under 18) is 2,323.
- Rank within US : This county is ranked 3111 of 3143
Pacific County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 15.0 percent.
- People (Age Under 18) : The number of people (age under 18) is 3,602.
- Rank within US : This county is ranked 3041 of 3143
Whitman County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 15.8 percent.
- People (Age Under 18) : The number of people (age under 18) is 7,439.
- Rank within US : This county is ranked 2992 of 3143
Clallam County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 16.1 percent.
- People (Age Under 18) : The number of people (age under 18) is 12,527.
- Rank within US : This county is ranked 2966 of 3143
Ferry County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 16.6 percent.
- People (Age Under 18) : The number of people (age under 18) is 1,228.
- Rank within US : This county is ranked 2930 of 3143
Kittitas County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 16.7 percent.
- People (Age Under 18) : The number of people (age under 18) is 7,872.
- Rank within US : This county is ranked 2918 of 3143
Skamania County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 16.8 percent.
- People (Age Under 18) : The number of people (age under 18) is 2,081.
- Rank within US : This county is ranked 2911 of 3143
Island County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 17.3 percent.
- People (Age Under 18) : The number of people (age under 18) is 15,049.
- Rank within US : This county is ranked 2848 of 3143
Wahkiakum County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 17.5 percent.
- People (Age Under 18) : The number of people (age under 18) is 817.
- Rank within US : This county is ranked 2810 of 3143
Columbia County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 18.0 percent.
- People (Age Under 18) : The number of people (age under 18) is 723.
- Rank within US : This county is ranked 2719 of 3143
Klickitat County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 18.2 percent.
- People (Age Under 18) : The number of people (age under 18) is 4,250.
- Rank within US : This county is ranked 2692 of 3143
Whatcom County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 18.5 percent.
- People (Age Under 18) : The number of people (age under 18) is 42,743.
- Rank within US : This county is ranked 2641 of 3143
Garfield County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 18.7 percent.
- People (Age Under 18) : The number of people (age under 18) is 440.
- Rank within US : This county is ranked 2601 of 3143
Pend Oreille County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 19.3 percent.
- People (Age Under 18) : The number of people (age under 18) is 2,715.
- Rank within US : This county is ranked 2459 of 3143
King County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 19.5 percent.
- People (Age Under 18) : The number of people (age under 18) is 445,594.
- Rank within US : This county is ranked 2404 of 3143
Mason County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 19.5 percent.
- People (Age Under 18) : The number of people (age under 18) is 13,273.
- Rank within US : This county is ranked 2404 of 3143
Asotin County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 19.6 percent.
- People (Age Under 18) : The number of people (age under 18) is 4,400.
- Rank within US : This county is ranked 2372 of 3143
Grays Harbor County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 19.7 percent.
- People (Age Under 18) : The number of people (age under 18) is 15,217.
- Rank within US : This county is ranked 2348 of 3143
Kitsap County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 19.7 percent.
- People (Age Under 18) : The number of people (age under 18) is 54,706.
- Rank within US : This county is ranked 2348 of 3143
Walla Walla County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 20.6 percent.
- People (Age Under 18) : The number of people (age under 18) is 12,787.
- Rank within US : This county is ranked 2055 of 3143
Skagit County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 20.9 percent.
- People (Age Under 18) : The number of people (age under 18) is 27,432.
- Rank within US : This county is ranked 1936 of 3143
Thurston County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 20.9 percent.
- People (Age Under 18) : The number of people (age under 18) is 62,380.
- Rank within US : This county is ranked 1936 of 3143
Stevens County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 21.1 percent.
- People (Age Under 18) : The number of people (age under 18) is 10,166.
- Rank within US : This county is ranked 1869 of 3143
Spokane County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 21.5 percent.
- People (Age Under 18) : The number of people (age under 18) is 118,285.
- Rank within US : This county is ranked 1698 of 3143
Lewis County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 21.6 percent.
- People (Age Under 18) : The number of people (age under 18) is 18,423.
- Rank within US : This county is ranked 1650 of 3143
Okanogan County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 21.6 percent.
- People (Age Under 18) : The number of people (age under 18) is 9,387.
- Rank within US : This county is ranked 1650 of 3143
Lincoln County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 21.8 percent.
- People (Age Under 18) : The number of people (age under 18) is 2,505.
- Rank within US : This county is ranked 1576 of 3143
Snohomish County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 22.1 percent.
- People (Age Under 18) : The number of people (age under 18) is 186,856.
- Rank within US : This county is ranked 1441 of 3143
Cowlitz County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 22.5 percent.
- People (Age Under 18) : The number of people (age under 18) is 25,231.
- Rank within US : This county is ranked 1260 of 3143
Chelan County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 22.6 percent.
- People (Age Under 18) : The number of people (age under 18) is 18,109.
- Rank within US : This county is ranked 1220 of 3143
Clark County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 22.7 percent.
- People (Age Under 18) : The number of people (age under 18) is 117,472.
- Rank within US : This county is ranked 1174 of 3143
Pierce County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 23.0 percent.
- People (Age Under 18) : The number of people (age under 18) is 214,038.
- Rank within US : This county is ranked 1057 of 3143
Douglas County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 24.4 percent.
- People (Age Under 18) : The number of people (age under 18) is 10,847.
- Rank within US : This county is ranked 573 of 3143
Benton County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 26.1 percent.
- People (Age Under 18) : The number of people (age under 18) is 55,579.
- Rank within US : This county is ranked 245 of 3143
Grant County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 28.3 percent.
- People (Age Under 18) : The number of people (age under 18) is 28,798.
- Rank within US : This county is ranked 121 of 3143
Yakima County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 28.9 percent.
- People (Age Under 18) : The number of people (age under 18) is 74,398.
- Rank within US : This county is ranked 102 of 3143
Franklin County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 30.9 percent.
- People (Age Under 18) : The number of people (age under 18) is 30,565.
- Rank within US : This county is ranked 50 of 3143
Adams County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 34.7 percent.
- People (Age Under 18) : The number of people (age under 18) is 7,223.
- Rank within US : This county is ranked 13 of 3143
Notes:
Created by statecancerprofiles.cancer.gov on 03/22/2026 2:40 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.