Boise County, Idaho Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Boise 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 averageHealthier than 76% of counties in Idaho
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C
Income Below averageWealthier than 74% of counties in Idaho
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C
Education Below averageBetter educated than 86% of counties in Idaho
Source: Map AI Methodology
Population: density and quick facts
| Metric | Boise County | Idaho Avg | U.S. Average |
|---|---|---|---|
| Population | 8,309 | 1,929,983 | 337,468,954 |
| Population density (per sq mi) | 4.4 | 23.1 | 86.4 |
| Population growth (%/yr) | 2.38% | 2.12% | 0.59% |
| Median age | 51.1 | 38.7 | 37.3 |
| Households | 3,606 | 712,816 | 130,235,071 |
Population in Boise County grew by 11.3% from 2009 to 2024, reaching 8,309 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Boise County is Boomers, aged 61–79, at 28.2% of residents. That is 12.2 points above Idaho as a whole.
- Gen Z 13–28 1,161 14.0% -8.9 pts
- Millennials 29–44 1,397 16.8% -3.9 pts
- Gen X 45–60 2,196 26.4% +7.2 pts
- Boomers 61–79 2,340 28.2% +12.2 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 48.3% of the people living in Boise County and men 51.7%.
- Women 48.3% Idaho 49.6%
- Men 51.7% Idaho 50.4%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in Boise County
Pick an age range and a women/men split and the figure above answers with how many residents that profile reaches.
Economy
Boise County has a the economy index of C, which means it is somewhat prosperous.
| Metric | Boise County | Idaho Avg | U.S. Average |
|---|---|---|---|
| Median household income | $79,226 | $78,141 | $80,455 |
| Income growth (%/yr) | 7.76% | 5.97% | 4.80% |
| Unemployment rate | 3.4% | 3.7% | 5.2% |
The median household income in Boise County is about 1% higher than in Idaho.
Housing
| Metric | Boise County | Idaho Avg | U.S. Average |
|---|---|---|---|
| Median home price | $473,529 | $394,140 | $248,835 |
| Median rent | $854 | $1,236 | $1,407 |
| Homeownership rate | 90.3% | 72.3% | 65.2% |
The median home price in Boise County is about 46.2 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $854 per month for that long.
Commute Time & Mobility
Commuters in Boise County spend about 76 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 317 hours, about 13.2 full days, spent commuting.
| Metric | Boise County | Idaho Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 38.0 | 18.0 | 22.4 |
| Round-trip commute (min) | 76.0 | 35.9 | 44.8 |
| Yearly time spent (hours) | 317 | 150 | 187 |
| Estimated yearly cost | $9,815 | $4,641 | $5,790 |
| Work from home | 20.3% | 13.3% | 15.0% |
| Highway traffic (vehicles/day) | 2,096 | 4,714 | 8,813 |
| Local road traffic (vehicles/day) | 656 | 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 Boise County is 38 minutes, longer 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
Boise County has a education index of C, which means it is somewhat educated.
| Metric | Boise County | Idaho Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 25.5% | 27.1% | 31.6% |
| Average household size | 2.29 | 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
Boise County has a health index of B, which means it is quite healthy.
| Metric | Boise County | Idaho Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 81.6 | 79.5 | 78.3 |
| Self-rated poor health | 13.7% | 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).
Boise County, ID Compared With Nearby Counties
Boise County, ID is the smallest of the 5 counties compared here, 8,309 residents against a local median of 28,046. Where Boise County, ID breaks from the counties next to it is commute, sitting 100% above the local median of 19.0 min at 38.0 min. That is the weaker end of the local range on this measure.
Median home price tells the same story from another angle: $473,529 against a local median of $387,981, 22% above it. The picture is mixed rather than uniform: median household income runs ahead of the neighbourhood while commute runs behind it, so Boise County, ID is trading one against the other rather than simply out-performing what surrounds it. The counties themselves spread 14.5 min on commute, so Boise County, ID sits at one end of an already wide local range rather than apart from it. Boise County, ID has the 5th lowest commute of the 5 areas compared here.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Boise County, ID | 8,309 | $79,226 #2/5 | $473,529 #2/5 | 38.0 min #5/5 |
| Gem County, ID | 20,614 | $65,574 | $112,500 | 30.3 min |
| Elmore County, ID | 29,321 | $66,194 | $421,052 | 15.8 min |
| Ada County, ID | 518,902 | $92,349 | $485,999 | 20.2 min |
| Payette County, ID | 26,771 | $67,405 | $354,910 | 17.7 min |
Frequently Asked Questions
Common questions about Boise County, Idaho.
How many people live in Boise County, Idaho?
About 8,309 people live in Boise County, Idaho, in 3,606 households of 2.3 people on average. The median age is 51.1, so residents are older than the U.S. median of 37.3 by about 14 years.
How densely populated is Boise County, Idaho?
Averaged over its land area, Boise County, Idaho has 4 people per square mile, a density typical of rural areas. That is about 5% of the U.S. average of 86.
Is Boise County, Idaho an affordable place to live?
The median home costs 6.0 times the median household income ($473,529 against $79,226), compared with 3.1 times nationally. A ratio of about 3 is traditionally considered affordable. Median rent of $854 a month takes about 13% of the median household's income, below the 30% level at which HUD considers renters cost-burdened.
Is it hard to find a job in Boise County, Idaho?
Unemployment in Boise County, Idaho is only 3.4%, well below the U.S. rate of 5.2%, a sign of a tight labor market where employers compete for workers.
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