# Counties in Idaho by average household size, 2024

All 44 values come from U.S. Census Bureau for 2024, so the places are comparable.

- Indicator id: `average_household_size`
- Unit: persons per household
- Definition: Average number of persons per private household. EU countries: EU-SILC. United States: American Community Survey five-year estimate of people in households divided by occupied housing units, where the period shown is the last year of the five-year span.
- Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B25010: average household size of occupied housing units (https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25010.dat)
- Publisher page: https://invokely.ai/en/publishers/us-census-bureau
- Retrieved: 2026-10-12
- Citation: U.S. Census Bureau. American Community Survey 5-year estimates, table B25010: average household size of occupied housing units. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b25010.dat. Retrieved 2026-10-12.
- Web page: https://invokely.ai/rankings/average-household-size/idaho-counties

| Rank | Place | persons per household |
|---:|---|---:|
| 1 | Madison County | 3.2 |
| 2 | Jefferson County | 3.2 |
| 3 | Bingham County | 3.1 |
| 4 | Camas County | 3 |
| 4 | Franklin County | 3 |
| 6 | Jerome County | 3 |
| 7 | Cassia County | 3 |
| 8 | Clark County | 2.9 |
| 9 | Bonneville County | 2.9 |
| 10 | Bear Lake County | 2.9 |
| 11 | Fremont County | 2.9 |
| 12 | Canyon County | 2.9 |
| 12 | Lincoln County | 2.9 |
| 14 | Caribou County | 2.9 |
| 14 | Power County | 2.9 |
| 16 | Owyhee County | 2.8 |
| 17 | Valley County | 2.8 |
| 18 | Gooding County | 2.8 |
| 19 | Payette County | 2.7 |
| 20 | Minidoka County | 2.7 |
| 21 | Gem County | 2.7 |
| 22 | Teton County | 2.7 |
| 22 | Twin Falls County | 2.7 |
| 24 | Adams County | 2.6 |
| 25 | Washington County | 2.6 |
| 26 | Bannock County | 2.6 |
| 26 | Boundary County | 2.6 |
| 28 | Elmore County | 2.5 |
| 29 | Kootenai County | 2.5 |
| 30 | Ada County | 2.5 |
| 30 | Bonner County | 2.5 |
| 32 | Butte County | 2.5 |
| 32 | Idaho County | 2.5 |
| 34 | Benewah County | 2.5 |
| 35 | Oneida County | 2.5 |
| 36 | Nez Perce County | 2.4 |
| 37 | Blaine County | 2.4 |
| 38 | Shoshone County | 2.4 |
| 39 | Lemhi County | 2.3 |
| 40 | Boise County | 2.3 |
| 41 | Latah County | 2.3 |
| 41 | Lewis County | 2.3 |
| 43 | Clearwater County | 2.3 |
| 44 | Custer County | 2.2 |