Adams County, Idaho Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Adams County, ID Population Density Map and Area Scores
Area Score
Health, income and education, each graded from F to A+. Explore interactive maps for deeper analysis.
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B
Health Around average
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D
Income Well below average
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D
Education Well below averageBetter educated than 72% of counties in Idaho
Source: Map AI Methodology
Population: density and quick facts
| Metric | Adams County | Idaho Avg | U.S. Average |
|---|---|---|---|
| Population | 4,744 | 1,929,983 | 337,468,954 |
| Population density (per sq mi) | 3.5 | 23.1 | 86.4 |
| Population growth (%/yr) | 2.59% | 2.12% | 0.59% |
| Median age | 50.8 | 38.7 | 37.3 |
| Households | 1,776 | 712,816 | 130,235,071 |
Population in Adams County grew by 34.5% from 2009 to 2024, reaching 4,744 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Adams County is Boomers, aged 61–79, at 29.5% of residents. That is 13.4 points above Idaho as a whole.
- Gen Z 13–28 676 14.2% -8.6 pts
- Millennials 29–44 741 15.6% -5.1 pts
- Gen X 45–60 1,113 23.5% +4.2 pts
- Boomers 61–79 1,397 29.5% +13.4 pts
Residents by birth cohort, from the 2025 age distribution. The right-hand figure is how far each cohort's share sits above or below Idaho, in percentage points. Children younger than Gen Z and the generations before the Boomers are counted in the population but not shown here, so these shares do not add up to 100%.
Male and female share
Women are 48.2% of the people living in Adams County and men 51.8%.
- Women 48.2% Idaho 49.6%
- Men 51.8% Idaho 50.4%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in Adams County
Pick an age range and a women/men split and the figure above answers with how many residents that profile reaches.
Economy
Adams County has a the economy index of D, which means it is barely prosperous.
| Metric | Adams County | Idaho Avg | U.S. Average |
|---|---|---|---|
| Median household income | $63,106 | $78,141 | $80,455 |
| Income growth (%/yr) | 5.42% | 5.97% | 4.80% |
| Unemployment rate | 7.5% | 3.7% | 5.2% |
The median household income in Adams County is about 19% lower than in Idaho.
Housing
| Metric | Adams County | Idaho Avg | U.S. Average |
|---|---|---|---|
| Median home price | $2,129,032 | $394,140 | $248,835 |
| Median rent | $830 | $1,236 | $1,407 |
| Homeownership rate | 84.7% | 72.3% | 65.2% |
The median home price in Adams County is about 213.8 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $830 per month for that long.
Commute Time & Mobility
Commuters in Adams County spend about 33 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 137 hours, about 5.7 full days, spent commuting.
| Metric | Adams County | Idaho Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 16.4 | 18.0 | 22.4 |
| Round-trip commute (min) | 32.8 | 35.9 | 44.8 |
| Yearly time spent (hours) | 137 | 150 | 187 |
| Estimated yearly cost | $4,242 | $4,641 | $5,790 |
| Work from home | 14.8% | 13.3% | 15.0% |
| Highway traffic (vehicles/day) | 678 | 4,714 | 8,813 |
| Local road traffic (vehicles/day) | 68 | 865 | 1,355 |
Fastest commutes among counties in
Idaho:
Custer County (8.9 min), Lemhi County (11.6 min), Madison County (12.0 min).
Slowest:
Camas County (49.5 min), Boise County (38.0 min), Lincoln County (32.0 min).
The average commute time in Adams County is 16 minutes, shorter than the 18 minutes in Idaho.
Estimated yearly cost applies a single national wage rule of thumb (U.S. Bureau of Labor Statistics average hourly earnings), not a measurement of wages in this area. Traffic volume figures come from proprietary Ticon and TrafficZoom data.
Education & Households
Adams County has a education index of D, which means it is barely educated.
| Metric | Adams County | Idaho Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 21.2% | 27.1% | 31.6% |
| Average household size | 2.63 | 2.64 | 2.53 |
Highest education index among counties in
Idaho:
Latah County (0.4), Teton County (0.3), Ada County (0.3).
Lowest:
Clark County (0.1), Owyhee County (0.2), Lincoln County (0.2).
Health
Adams County has a health index of B, which means it is quite healthy.
| Metric | Adams County | Idaho Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 79.0 | 79.5 | 78.3 |
| Self-rated poor health | 14.8% | 15.6% | 16.3% |
| Smokers | 16.6% | 17.6% | 19.0% |
Highest health index among counties in
Idaho:
Madison County (0.8), Latah County (0.8), Ada County (0.8).
Lowest:
Shoshone County (0.8), Washington County (0.8), Lincoln County (0.8).
Adams County, ID Compared With Nearby Counties
How Adams County, ID compares with the 2 counties closest to it.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Adams County, ID | 4,744 | $63,106 #3/3 | $2,129,032 #1/3 | 16.4 min #1/3 |
| Gem County, ID | 20,614 | $65,574 | $112,500 | 30.3 min |
| Payette County, ID | 26,771 | $67,405 | $354,910 | 17.7 min |
Frequently Asked Questions
Common questions about Adams County, Idaho.
How big is Adams County, Idaho by population?
About 4,744 people live in Adams County, Idaho, in 1,776 households of 2.6 people on average. The median age is 50.8, so residents are older than the U.S. median of 37.3 by about 14 years.
Is Adams County, Idaho mostly urban or rural?
Averaged over its land area, Adams County, Idaho has 3 people per square mile, a density typical of rural areas. That is about 4% of the U.S. average of 86.
Can a typical household afford a home in Adams County, Idaho?
The median home costs 33.7 times the median household income ($2,129,032 against $63,106), compared with 3.1 times nationally. A ratio of about 3 is traditionally considered affordable. Median rent of $830 a month takes about 16% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
Is unemployment high in Adams County, Idaho?
Unemployment in Adams County, Idaho is 7.5%, well above the U.S. rate of 5.2%, so job seekers may face more competition than elsewhere.
How common is a college degree in Adams County, Idaho?
21.2% of adults in Adams County, Idaho hold a bachelor's degree or higher (about 1 in 5), well below the U.S. share of 31.6%.
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