Counties of Idaho
Idaho has 44 counties, home to 2,029,733 people across 214,051 km². Each county below opens its full profile — Census Bureau and American Community Survey figures, and how it ranks against the rest of Idaho and the country.
- Counties
- 44
- Population
- 2,029,733
- 2025 estimate
- #37 of 51 states
- Area
- 214,051 km²
- #11 of 51 states
- Density
- 9
- per km²
- #45 of 51 states
How Idaho's counties spread
Across Idaho's counties: the middle value, where the state ranks among all states (1 = highest median), and which county is highest and lowest. Medians rather than totals, since most of these are rates that cannot be added up.
Amenities & Infrastructure
| Indicator | Median | Rank | Highest | Lowest |
|---|---|---|---|---|
| Households with Broadband2024 | 89.5% | 16 / 50 | Franklin County96.5% | Adams County76.8% |
| Median Gross Rent2024 | $915 | 23 / 50 | Ada County$1,577 | Butte County$608 |
| Median Home Value2024 | $321,300 | 14 / 50 | Blaine County$735,300 | Power County$212,900 |
| Owner-Occupied Homes2024 | 75.4% | 15 / 50 | Boise County90.3% | Madison County40.2% |
| Vacant Homes2024 | 10.5% | 39 / 50 | Valley County66.5% | Canyon County3.4% |
Demography
| Indicator | Median | Rank | Highest | Lowest |
|---|---|---|---|---|
| Aged 65 and Over2024 | 19.3% | 35 / 50 | Custer County36.6% | Madison County5.4% |
| American Indian & Alaska Native2024 | 0.5% | 11 / 50 | Benewah County7.2% | Butte County0.0% |
| Asian, non-Hispanic2024 | 0.3% | 44 / 50 | Custer County3.1% | Butte County0.0% |
| Average Household Size2024people | 2.7 | 4 / 50 | Madison County3.2 | Custer County2.2 |
| Black, non-Hispanic2024 | 0.3% | 45 / 50 | Elmore County2.8% | Gem County0.0% |
| Foreign-Born2024 | 4.3% | 18 / 50 | Clark County19.3% | Adams County0.5% |
| Hispanic or Latino2024 | 9.8% | 15 / 50 | Jerome County39.2% | Benewah County3.8% |
| Median Age2024years | 39.3 | 46 / 50 | Custer County60 | Madison County21.4 |
| Sex Ratio2024per 1,000 males | 964 | 45 / 50 | Madison County1,209 | Clearwater County844 |
| Speak a Language Other Than English2024 | 8.4% | 18 / 50 | Jerome County34.7% | Adams County1.3% |
| Under 182024 | 24.1% | 3 / 50 | Jefferson County32.3% | Custer County13.9% |
| Veterans2024 | 7.9% | 13 / 50 | Elmore County20.8% | Clark County1.3% |
| White, non-Hispanic2024 | 82.2% | 25 / 50 | Bear Lake County93.2% | Jerome County56.8% |
Economy
| Indicator | Median | Rank | Highest | Lowest |
|---|---|---|---|---|
| Below Poverty Line2024 | 11.7% | 27 / 50 | Madison County24.5% | Camas County5.9% |
| Households on SNAP2024 | 7.8% | 41 / 50 | Payette County15.6% | Camas County0.3% |
| Income Inequality2024index | 0.425 | 46 / 50 | Lemhi County0.495 | Clark County0.332 |
| Median Household Income2024 | $67,492 | 30 / 50 | Teton County$99,805 | Lewis County$51,615 |
| Per Capita Income2024 | $32,829 | 38 / 50 | Blaine County$57,942 | Clark County$22,561 |
| Unemployment Rate2024 | 3.4% | 41 / 50 | Madison County8.3% | Camas County0.0% |
Education
| Indicator | Median | Rank | Highest | Lowest |
|---|---|---|---|---|
| Bachelor's Degree or Higher2024 | 22.7% | 30 / 50 | Teton County49.9% | Lincoln County11.1% |
| High School or Higher2024 | 90.8% | 30 / 50 | Madison County97.3% | Jerome County73.5% |
Health Coverage
| Indicator | Median | Rank | Highest | Lowest |
|---|---|---|---|---|
| No Health Insurance2024 | 9.8% | 13 / 50 | Owyhee County21.9% | Madison County4.9% |
| With a Disability2024 | 15.7% | 23 / 50 | Custer County24.8% | Madison County7.2% |
Population & Density
| Indicator | Median | Rank | Highest | Lowest |
|---|---|---|---|---|
| Population2025 | 15,049 | 42 / 50 | Ada County546,141 | Clark County783 |
| Population Density2025/km² | 4 | 39 / 50 | Ada County200 | Butte County0 |
Work & Commute
| Indicator | Median | Rank | Highest | Lowest |
|---|---|---|---|---|
| Commute by Public Transit2024 | 0.2% | 25 / 50 | Blaine County3.3% | Clark County0.0% |
| Households with No Vehicle2024 | 3.3% | 49 / 50 | Butte County5.7% | Clark County0.0% |
| Mean Commute Time2024minutes | 21.7 | 38 / 50 | Camas County42.7 | Lemhi County15.5 |
| Work from Home2024 | 10.3% | 22 / 50 | Custer County27.3% | Elmore County4.5% |
All counties
| County | Population 2025 | Area | Median income |
|---|---|---|---|
| Ada County | 546,141 | 2,725 km² | $91,502 |
| Adams County | 5,013 | 3,530 km² | $61,808 |
| Bannock County | 91,591 | 2,881 km² | $66,499 |
| Bear Lake County | 6,727 | 2,527 km² | $75,260 |
| Benewah County | 10,508 | 2,012 km² | $59,794 |
| Bingham County | 51,153 | 5,423 km² | $77,878 |
| Blaine County | 25,517 | 6,832 km² | $92,566 |
| Boise County | 8,545 | 4,919 km² | $78,774 |
| Bonner County | 54,420 | 4,489 km² | $66,979 |
| Bonneville County | 135,771 | 4,833 km² | $79,068 |
| Boundary County | 13,997 | 3,286 km² | $67,237 |
| Butte County | 2,783 | 5,792 km² | $53,015 |
| Camas County | 1,316 | 2,782 km² | $57,955 |
| Canyon County | 275,123 | 1,520 km² | $76,488 |
| Caribou County | 7,252 | 4,569 km² | $68,782 |
| Cassia County | 26,397 | 6,645 km² | $70,830 |
| Clark County | 783 | 4,567 km² | $55,208 |
| Clearwater County | 9,118 | 6,364 km² | $60,000 |
| Custer County | 4,636 | 12,748 km² | $67,574 |
| Elmore County | 29,465 | 7,964 km² | $65,359 |
| Franklin County | 15,889 | 1,717 km² | $71,950 |
| Fremont County | 14,208 | 4,828 km² | $72,683 |
| Gem County | 21,773 | 1,450 km² | $64,605 |
| Gooding County | 16,446 | 1,889 km² | $63,559 |
| Idaho County | 17,874 | 21,957 km² | $66,325 |
| Jefferson County | 35,297 | 2,833 km² | $86,679 |
| Jerome County | 26,362 | 1,548 km² | $71,724 |
| Kootenai County | 191,864 | 3,206 km² | $81,861 |
| Latah County | 41,842 | 2,786 km² | $65,424 |
| Lemhi County | 8,474 | 11,820 km² | $53,202 |
| Lewis County | 3,704 | 1,240 km² | $51,615 |
| Lincoln County | 5,603 | 3,112 km² | $71,453 |
| Madison County | 55,172 | 1,215 km² | $60,160 |
| Minidoka County | 22,911 | 1,961 km² | $70,377 |
| Nez Perce County | 42,905 | 2,197 km² | $72,599 |
| Oneida County | 5,085 | 3,105 km² | $74,954 |
| Owyhee County | 12,661 | 19,861 km² | $64,406 |
| Payette County | 27,824 | 1,054 km² | $67,673 |
| Power County | 8,246 | 3,636 km² | $61,146 |
| Shoshone County | 14,130 | 6,831 km² | $55,527 |
| Teton County | 13,254 | 1,163 km² | $99,805 |
| Twin Falls County | 97,539 | 4,977 km² | $67,409 |
| Valley County | 12,831 | 9,493 km² | $76,078 |
| Washington County | 11,583 | 3,763 km² | $54,000 |
Compare Idaho's counties on a map, add layers and run a scatter — open the atlas, or browse all 3,144 US counties or all states.