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Demographics Table

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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 Name

County
 sort alphabetically by name ascending
2023 Rural-Urban Continuum Codes Φ
 sort by rural urban descending
Value (Percent)
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People (Age Under 18)
 sort by sample size ascending
Rank within US
(of 3143 counties)
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United States N/A 22.2 73,645,238 N/A
Idaho N/A 24.5 463,167 4 of 52
Washington County Rural 22.5 2,442 1,340
Valley County Rural 18.4 2,231 2,684
Twin Falls County Urban 26.7 24,607 215
Teton County Rural 23.2 2,803 1,042
Shoshone County Rural 20.8 2,820 2,044
Power County Rural 30.4 2,435 71
Payette County Rural 25.7 6,719 324
Owyhee County Urban 25.0 3,068 468
Oneida County Rural 26.7 1,250 215
Nez Perce County Urban 21.4 9,093 1,821
Minidoka County Rural 29.2 6,407 100
Madison County Rural 20.5 11,001 2,151
Lincoln County Rural 26.0 1,373 281
Lewis County Rural 22.0 802 1,567
Lemhi County Rural 18.3 1,495 2,702
Latah County Rural 18.9 7,625 2,581
Kootenai County Urban 22.6 40,103 1,288
Jerome County Urban 30.0 7,434 76
Jefferson County Urban 32.9 10,592 29
Idaho County Rural 19.8 3,385 2,359
Gooding County Rural 27.1 4,269 187
Gem County Urban 22.4 4,440 1,385
Fremont County Rural 24.1 3,299 687
Franklin County Urban 30.9 4,553 57
Elmore County Rural 24.5 7,130 572
Custer County Rural 11.1 491 3,129
Clearwater County Rural 15.3 1,365 3,042
Clark County Rural 28.9 224 109
Cassia County Rural 31.2 7,858 51
Caribou County Rural 27.5 1,956 165
Canyon County Urban 27.2 65,829 183
Camas County Rural 33.2 383 26
Butte County Urban 26.6 705 228
Boundary County Rural 23.3 2,962 1,001
Bonneville County Urban 30.2 38,360 73
Bonner County Rural 19.6 9,704 2,404
Boise County Urban 15.4 1,236 3,038
Blaine County Rural 19.6 4,815 2,404
Bingham County Rural 29.7 14,570 85
Benewah County Rural 22.1 2,189 1,518
Bear Lake County Rural 27.1 1,776 187
Bannock County Urban 25.4 22,509 378
Adams County Rural 17.1 788 2,892
Ada County Urban 22.5 114,071 1,340
Notes:
Created by statecancerprofiles.cancer.gov on 07/09/2025 10:45 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.

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