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Demographics Table

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Demographic Data Report for Idaho by County
Population: Age 18-39
All Races (includes Hispanic), Both Sexes
2019-2023 American Community Survey 5-Year Data
Sorted by Count

County
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2023 Rural-Urban Continuum Codes Φ
 sort by rural urban descending
Value (Percent)
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People (Age 18-39)
 sort by sample size ascending
Rank within US
(of 3143 counties)
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United States N/A 29.5 98,058,393 N/A
Idaho N/A 29.3 554,369 21 of 52
Ada County Urban 30.0 152,186 486
Canyon County Urban 29.8 72,194 512
Kootenai County Urban 26.2 46,505 1,389
Bonneville County Urban 29.0 36,808 662
Madison County Rural 62.0 33,225 2
Bannock County Urban 30.9 27,363 376
Twin Falls County Urban 28.9 26,577 682
Latah County Rural 42.2 17,032 37
Bingham County Rural 26.5 12,978 1,285
Nez Perce County Urban 27.4 11,623 1,007
Elmore County Rural 35.6 10,349 133
Bonner County Rural 20.9 10,323 2,866
Jefferson County Urban 27.1 8,724 1,092
Cassia County Rural 28.0 7,043 852
Jerome County Urban 27.0 6,696 1,116
Payette County Rural 25.5 6,670 1,655
Blaine County Rural 24.5 6,026 2,020
Minidoka County Rural 26.9 5,904 1,143
Gem County Urban 23.5 4,657 2,328
Franklin County Urban 27.5 4,046 978
Gooding County Rural 24.3 3,827 2,094
Idaho County Rural 21.2 3,629 2,825
Fremont County Rural 26.0 3,559 1,479
Owyhee County Urban 26.9 3,308 1,143
Teton County Rural 27.3 3,301 1,035
Shoshone County Rural 23.1 3,134 2,437
Boundary County Rural 23.0 2,920 2,466
Valley County Rural 22.3 2,708 2,639
Washington County Rural 23.9 2,593 2,208
Benewah County Rural 21.8 2,158 2,737
Power County Rural 26.7 2,141 1,210
Clearwater County Rural 20.9 1,861 2,866
Caribou County Rural 25.5 1,818 1,655
Lemhi County Rural 19.4 1,585 3,011
Boise County Urban 19.7 1,581 2,990
Lincoln County Rural 29.2 1,539 627
Bear Lake County Rural 22.6 1,480 2,567
Oneida County Rural 23.1 1,080 2,437
Adams County Rural 18.3 842 3,069
Lewis County Rural 18.4 671 3,066
Butte County Urban 24.9 661 1,865
Custer County Rural 12.1 534 3,138
Camas County Rural 23.6 273 2,294
Clark County Rural 30.5 237 419
Notes:
Created by statecancerprofiles.cancer.gov on 07/03/2025 10:40 pm.

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 18-39, see the dictionary.

Data for United States does not include Puerto Rico.

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