# Counties in Idaho by share of population aged 65 and over, 2025

All 44 values come from U.S. Census Bureau for 2025, so the places are comparable.

- Indicator id: `population_65_plus_share`
- Unit: %
- Definition: Residents aged 65 or over as a percentage of total population. Spain: 1 January, INE annual census. United States: 1 July, Census Bureau population estimates. World Bank figures for other countries and the World refer to mid-year.
- Source: U.S. Census Bureau, Population Estimates Program, county population by age and sex (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties (https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/counties/asrh/cc-est2025-agesex-all.csv)
- Retrieved: 2026-10-09
- Citation: U.S. Census Bureau. Population Estimates Program, county population by age and sex (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties. https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/counties/asrh/cc-est2025-agesex-all.csv. Retrieved 2026-10-09.
- Web page: https://invokely.ai/rankings/population-65-plus/idaho-counties
- CSV: https://invokely.ai/download/rankings/population-65-plus/idaho-counties.csv

| Rank | Place | % |
|---:|---|---:|
| 1 | Custer County | 32.8 |
| 2 | Lemhi County | 32.8 |
| 3 | Idaho County | 32.6 |
| 4 | Adams County | 32.5 |
| 5 | Boise County | 31.1 |
| 6 | Clearwater County | 31.1 |
| 7 | Lewis County | 29.6 |
| 8 | Valley County | 29.6 |
| 9 | Camas County | 29.6 |
| 10 | Bonner County | 28.3 |
| 11 | Benewah County | 27.2 |
| 12 | Washington County | 26.5 |
| 13 | Blaine County | 26.1 |
| 14 | Boundary County | 26 |
| 15 | Shoshone County | 25.9 |
| 16 | Butte County | 25.9 |
| 17 | Gem County | 25.1 |
| 18 | Bear Lake County | 24 |
| 19 | Nez Perce County | 22.9 |
| 20 | Kootenai County | 22.4 |
| 21 | Payette County | 21.7 |
| 22 | Clark County | 21.5 |
| 23 | Oneida County | 21.1 |
| 24 | Owyhee County | 20.1 |
| 25 | Fremont County | 19.7 |
| 26 | Gooding County | 19.3 |
| 27 | Caribou County | 19.1 |
| 28 | Ada County | 18.1 |
| 29 | Twin Falls County | 17.9 |
| 30 | Minidoka County | 17.8 |
| 31 | Power County | 17.3 |
| 32 | Lincoln County | 17.1 |
| 33 | Bannock County | 16.9 |
| 34 | Bingham County | 16.8 |
| 35 | Latah County | 16.7 |
| 36 | Elmore County | 16.6 |
| 37 | Teton County | 16.1 |
| 38 | Franklin County | 16 |
| 39 | Cassia County | 15.9 |
| 40 | Canyon County | 15.7 |
| 41 | Bonneville County | 15 |
| 42 | Jerome County | 14.7 |
| 43 | Jefferson County | 13.8 |
| 44 | Madison County | 6.6 |