Interpretation of Demographics Data
Demographic Data Report for Idaho by County
Population: Age under 18
All Races (includes Hispanic), Both Sexes
2019-2023 American Community Survey 5-Year Data
Sorted by Value
United States
- 2023 Rural-Urban Continuum Codes Φ : N/A
- Value (Percent) : The value is 22.2 percent.
- People (Age Under 18) : The number of people (age under 18) is 73,645,238.
- Rank within US : N/A
Idaho
- 2023 Rural-Urban Continuum Codes Φ : N/A
- Value (Percent) : The value is 24.5 percent.
- People (Age Under 18) : The number of people (age under 18) is 463,167.
- Rank within US : This state is ranked 4 of 52
Custer County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 11.1 percent.
- People (Age Under 18) : The number of people (age under 18) is 491.
- Rank within US : This county is ranked 3129 of 3143
Clearwater County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 15.3 percent.
- People (Age Under 18) : The number of people (age under 18) is 1,365.
- Rank within US : This county is ranked 3042 of 3143
Boise County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 15.4 percent.
- People (Age Under 18) : The number of people (age under 18) is 1,236.
- Rank within US : This county is ranked 3038 of 3143
Adams County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 17.1 percent.
- People (Age Under 18) : The number of people (age under 18) is 788.
- Rank within US : This county is ranked 2892 of 3143
Lemhi County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 18.3 percent.
- People (Age Under 18) : The number of people (age under 18) is 1,495.
- Rank within US : This county is ranked 2702 of 3143
Valley County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 18.4 percent.
- People (Age Under 18) : The number of people (age under 18) is 2,231.
- Rank within US : This county is ranked 2684 of 3143
Latah County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 18.9 percent.
- People (Age Under 18) : The number of people (age under 18) is 7,625.
- Rank within US : This county is ranked 2581 of 3143
Blaine County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 19.6 percent.
- People (Age Under 18) : The number of people (age under 18) is 4,815.
- Rank within US : This county is ranked 2404 of 3143
Bonner County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 19.6 percent.
- People (Age Under 18) : The number of people (age under 18) is 9,704.
- Rank within US : This county is ranked 2404 of 3143
Idaho County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 19.8 percent.
- People (Age Under 18) : The number of people (age under 18) is 3,385.
- Rank within US : This county is ranked 2359 of 3143
Madison County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 20.5 percent.
- People (Age Under 18) : The number of people (age under 18) is 11,001.
- Rank within US : This county is ranked 2151 of 3143
Shoshone County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 20.8 percent.
- People (Age Under 18) : The number of people (age under 18) is 2,820.
- Rank within US : This county is ranked 2044 of 3143
Nez Perce County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 21.4 percent.
- People (Age Under 18) : The number of people (age under 18) is 9,093.
- Rank within US : This county is ranked 1821 of 3143
Lewis County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 22.0 percent.
- People (Age Under 18) : The number of people (age under 18) is 802.
- Rank within US : This county is ranked 1567 of 3143
Benewah County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 22.1 percent.
- People (Age Under 18) : The number of people (age under 18) is 2,189.
- Rank within US : This county is ranked 1518 of 3143
Gem County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 22.4 percent.
- People (Age Under 18) : The number of people (age under 18) is 4,440.
- Rank within US : This county is ranked 1385 of 3143
Ada 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 114,071.
- Rank within US : This county is ranked 1340 of 3143
Washington County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 22.5 percent.
- People (Age Under 18) : The number of people (age under 18) is 2,442.
- Rank within US : This county is ranked 1340 of 3143
Kootenai 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 40,103.
- Rank within US : This county is ranked 1288 of 3143
Teton County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 23.2 percent.
- People (Age Under 18) : The number of people (age under 18) is 2,803.
- Rank within US : This county is ranked 1042 of 3143
Boundary County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 23.3 percent.
- People (Age Under 18) : The number of people (age under 18) is 2,962.
- Rank within US : This county is ranked 1001 of 3143
Fremont County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 24.1 percent.
- People (Age Under 18) : The number of people (age under 18) is 3,299.
- Rank within US : This county is ranked 687 of 3143
Elmore County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 24.5 percent.
- People (Age Under 18) : The number of people (age under 18) is 7,130.
- Rank within US : This county is ranked 572 of 3143
Owyhee County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 25.0 percent.
- People (Age Under 18) : The number of people (age under 18) is 3,068.
- Rank within US : This county is ranked 468 of 3143
Bannock County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 25.4 percent.
- People (Age Under 18) : The number of people (age under 18) is 22,509.
- Rank within US : This county is ranked 378 of 3143
Payette County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 25.7 percent.
- People (Age Under 18) : The number of people (age under 18) is 6,719.
- Rank within US : This county is ranked 324 of 3143
Lincoln County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 26.0 percent.
- People (Age Under 18) : The number of people (age under 18) is 1,373.
- Rank within US : This county is ranked 281 of 3143
Butte County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 26.6 percent.
- People (Age Under 18) : The number of people (age under 18) is 705.
- Rank within US : This county is ranked 228 of 3143
Oneida County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 26.7 percent.
- People (Age Under 18) : The number of people (age under 18) is 1,250.
- Rank within US : This county is ranked 215 of 3143
Twin Falls County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 26.7 percent.
- People (Age Under 18) : The number of people (age under 18) is 24,607.
- Rank within US : This county is ranked 215 of 3143
Bear Lake County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 27.1 percent.
- People (Age Under 18) : The number of people (age under 18) is 1,776.
- Rank within US : This county is ranked 187 of 3143
Gooding County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 27.1 percent.
- People (Age Under 18) : The number of people (age under 18) is 4,269.
- Rank within US : This county is ranked 187 of 3143
Canyon County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 27.2 percent.
- People (Age Under 18) : The number of people (age under 18) is 65,829.
- Rank within US : This county is ranked 183 of 3143
Caribou County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 27.5 percent.
- People (Age Under 18) : The number of people (age under 18) is 1,956.
- Rank within US : This county is ranked 165 of 3143
Clark County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 28.9 percent.
- People (Age Under 18) : The number of people (age under 18) is 224.
- Rank within US : This county is ranked 109 of 3143
Minidoka County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 29.2 percent.
- People (Age Under 18) : The number of people (age under 18) is 6,407.
- Rank within US : This county is ranked 100 of 3143
Bingham County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 29.7 percent.
- People (Age Under 18) : The number of people (age under 18) is 14,570.
- Rank within US : This county is ranked 85 of 3143
Jerome County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 30.0 percent.
- People (Age Under 18) : The number of people (age under 18) is 7,434.
- Rank within US : This county is ranked 76 of 3143
Bonneville County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 30.2 percent.
- People (Age Under 18) : The number of people (age under 18) is 38,360.
- Rank within US : This county is ranked 73 of 3143
Power County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 30.4 percent.
- People (Age Under 18) : The number of people (age under 18) is 2,435.
- Rank within US : This county is ranked 71 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 4,553.
- Rank within US : This county is ranked 57 of 3143
Cassia County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 31.2 percent.
- People (Age Under 18) : The number of people (age under 18) is 7,858.
- Rank within US : This county is ranked 51 of 3143
Jefferson County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 32.9 percent.
- People (Age Under 18) : The number of people (age under 18) is 10,592.
- Rank within US : This county is ranked 29 of 3143
Camas County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 33.2 percent.
- People (Age Under 18) : The number of people (age under 18) is 383.
- Rank within US : This county is ranked 26 of 3143
Notes:
Created by statecancerprofiles.cancer.gov on 07/09/2025 10:00 am.
Φ Rural-Urban Continuum Codes provided by the USDA.
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.