Interpretation of Demographics Data
Demographic Data Report for Idaho by County
Population: Age 18-39
All Races (includes Hispanic), Both Sexes
2020-2024 American Community Survey 5-Year Data
Sorted by Percent
United States
- 2023 Rural-Urban Continuum Codes Φ : N/A
- Value (Percent) : The value is 29.5 percent.
- People (Age 18-39) : The number of people (age 18-39) is 98,945,767.
- Rank within US : N/A
Idaho
- 2023 Rural-Urban Continuum Codes Φ : N/A
- Value (Percent) : The value is 29.4 percent.
- People (Age 18-39) : The number of people (age 18-39) is 568,594.
- Rank within US : This county is ranked 20 of 52
Madison County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 62.3 percent.
- People (Age 18-39) : The number of people (age 18-39) is 34,038.
- Rank within US : This county is ranked 2 of 3143
Latah County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 42.4 percent.
- People (Age 18-39) : The number of people (age 18-39) is 17,387.
- Rank within US : This county is ranked 35 of 3143
Elmore County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 35.4 percent.
- People (Age 18-39) : The number of people (age 18-39) is 10,391.
- Rank within US : This county is ranked 141 of 3143
Clark County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 31.2 percent.
- People (Age 18-39) : The number of people (age 18-39) is 265.
- Rank within US : This county is ranked 357 of 3143
Bannock County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 30.9 percent.
- People (Age 18-39) : The number of people (age 18-39) is 27,682.
- Rank within US : This county is ranked 385 of 3143
Ada County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 30.3 percent.
- People (Age 18-39) : The number of people (age 18-39) is 157,169.
- Rank within US : This county is ranked 445 of 3143
Canyon County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 29.8 percent.
- People (Age 18-39) : The number of people (age 18-39) is 74,656.
- Rank within US : This county is ranked 513 of 3143
Bonneville County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 29.2 percent.
- People (Age 18-39) : The number of people (age 18-39) is 37,778.
- Rank within US : This county is ranked 615 of 3143
Twin Falls County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 28.8 percent.
- People (Age 18-39) : The number of people (age 18-39) is 27,031.
- Rank within US : This county is ranked 703 of 3143
Teton County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 28.5 percent.
- People (Age 18-39) : The number of people (age 18-39) is 3,538.
- Rank within US : This county is ranked 761 of 3143
Lincoln County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 27.7 percent.
- People (Age 18-39) : The number of people (age 18-39) is 1,484.
- Rank within US : This county is ranked 935 of 3143
Cassia County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 27.6 percent.
- People (Age 18-39) : The number of people (age 18-39) is 7,040.
- Rank within US : This county is ranked 961 of 3143
Bingham County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 27.5 percent.
- People (Age 18-39) : The number of people (age 18-39) is 13,637.
- Rank within US : This county is ranked 993 of 3143
Jerome County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 27.5 percent.
- People (Age 18-39) : The number of people (age 18-39) is 6,935.
- Rank within US : This county is ranked 993 of 3143
Minidoka County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 27.4 percent.
- People (Age 18-39) : The number of people (age 18-39) is 6,088.
- Rank within US : This county is ranked 1021 of 3143
Nez Perce County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 27.4 percent.
- People (Age 18-39) : The number of people (age 18-39) is 11,678.
- Rank within US : This county is ranked 1021 of 3143
Jefferson County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 27.2 percent.
- People (Age 18-39) : The number of people (age 18-39) is 9,026.
- Rank within US : This county is ranked 1081 of 3143
Power County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 27.1 percent.
- People (Age 18-39) : The number of people (age 18-39) is 2,207.
- Rank within US : This county is ranked 1112 of 3143
Franklin County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 26.6 percent.
- People (Age 18-39) : The number of people (age 18-39) is 3,999.
- Rank within US : This county is ranked 1264 of 3143
Owyhee County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 26.4 percent.
- People (Age 18-39) : The number of people (age 18-39) is 3,296.
- Rank within US : This county is ranked 1335 of 3143
Caribou County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 26.3 percent.
- People (Age 18-39) : The number of people (age 18-39) is 1,887.
- Rank within US : This county is ranked 1375 of 3143
Fremont County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 26.0 percent.
- People (Age 18-39) : The number of people (age 18-39) is 3,622.
- Rank within US : This county is ranked 1485 of 3143
Kootenai County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 26.0 percent.
- People (Age 18-39) : The number of people (age 18-39) is 47,408.
- Rank within US : This county is ranked 1485 of 3143
Camas County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 25.6 percent.
- People (Age 18-39) : The number of people (age 18-39) is 288.
- Rank within US : This county is ranked 1623 of 3143
Gooding County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 25.4 percent.
- People (Age 18-39) : The number of people (age 18-39) is 4,044.
- Rank within US : This county is ranked 1712 of 3143
Payette County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 25.2 percent.
- People (Age 18-39) : The number of people (age 18-39) is 6,744.
- Rank within US : This county is ranked 1789 of 3143
Blaine County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 24.8 percent.
- People (Age 18-39) : The number of people (age 18-39) is 6,188.
- Rank within US : This county is ranked 1934 of 3143
Butte County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 24.2 percent.
- People (Age 18-39) : The number of people (age 18-39) is 649.
- Rank within US : This county is ranked 2138 of 3143
Shoshone County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 23.5 percent.
- People (Age 18-39) : The number of people (age 18-39) is 3,246.
- Rank within US : This county is ranked 2338 of 3143
Gem County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 23.3 percent.
- People (Age 18-39) : The number of people (age 18-39) is 4,796.
- Rank within US : This county is ranked 2400 of 3143
Valley County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 23.3 percent.
- People (Age 18-39) : The number of people (age 18-39) is 2,881.
- Rank within US : This county is ranked 2400 of 3143
Washington County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 22.7 percent.
- People (Age 18-39) : The number of people (age 18-39) is 2,530.
- Rank within US : This county is ranked 2567 of 3143
Bear Lake County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 21.9 percent.
- People (Age 18-39) : The number of people (age 18-39) is 1,459.
- Rank within US : This county is ranked 2723 of 3143
Oneida County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 21.9 percent.
- People (Age 18-39) : The number of people (age 18-39) is 1,042.
- Rank within US : This county is ranked 2723 of 3143
Benewah County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 21.8 percent.
- People (Age 18-39) : The number of people (age 18-39) is 2,206.
- Rank within US : This county is ranked 2742 of 3143
Clearwater County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 21.8 percent.
- People (Age 18-39) : The number of people (age 18-39) is 1,961.
- Rank within US : This county is ranked 2742 of 3143
Boundary County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 21.6 percent.
- People (Age 18-39) : The number of people (age 18-39) is 2,842.
- Rank within US : This county is ranked 2769 of 3143
Idaho County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 20.9 percent.
- People (Age 18-39) : The number of people (age 18-39) is 3,648.
- Rank within US : This county is ranked 2871 of 3143
Bonner County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 20.3 percent.
- People (Age 18-39) : The number of people (age 18-39) is 10,377.
- Rank within US : This county is ranked 2939 of 3143
Boise County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 20.0 percent.
- People (Age 18-39) : The number of people (age 18-39) is 1,658.
- Rank within US : This county is ranked 2964 of 3143
Lemhi County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 20.0 percent.
- People (Age 18-39) : The number of people (age 18-39) is 1,652.
- Rank within US : This county is ranked 2964 of 3143
Lewis County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 19.0 percent.
- People (Age 18-39) : The number of people (age 18-39) is 699.
- Rank within US : This county is ranked 3020 of 3143
Adams County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 18.8 percent.
- People (Age 18-39) : The number of people (age 18-39) is 890.
- Rank within US : This county is ranked 3032 of 3143
Custer County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 12.3 percent.
- People (Age 18-39) : The number of people (age 18-39) is 552.
- Rank within US : This county is ranked 3139 of 3143
Notes:
Created by statecancerprofiles.cancer.gov on 03/30/2026 9:16 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 18-39, see the dictionary.
Data for United States does not include Puerto Rico.