Blaine County, Idaho Demographics
Population trends, housing costs, income, commuting, and health, all on one page.
Blaine 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 averageAmong the top 5 healthiest counties in Idaho
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B
Income Around averageAmong the top 3 wealthiest counties in Idaho
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B
Education Around averageAmong the top 5 best educated counties in Idaho
Source: Map AI Methodology
Population: density and quick facts
| Metric | Blaine County | Idaho Avg | U.S. Average |
|---|---|---|---|
| Population | 24,952 | 1,929,983 | 337,468,954 |
| Population density (per sq mi) | 9.4 | 23.1 | 86.4 |
| Population growth (%/yr) | 1.98% | 2.12% | 0.59% |
| Median age | 45.9 | 38.7 | 37.3 |
| Households | 10,413 | 712,816 | 130,235,071 |
Population in Blaine County grew by 15.0% from 2009 to 2024, reaching 24,952 in 2024.
Population Growth 2009–2024
Race & Ethnicity
Age & Sex
The largest generation in Blaine County is Gen X, aged 45–60, at 23.9% of residents. That is 4.6 points above Idaho as a whole.
- Gen Z 13–28 4,534 18.2% -4.7 pts
- Millennials 29–44 4,966 19.9% -0.8 pts
- Gen X 45–60 5,955 23.9% +4.6 pts
- Boomers 61–79 4,989 20.0% +4.0 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 48.1% of the people living in Blaine County and men 51.9%.
- Women 48.1% Idaho 49.6%
- Men 51.9% Idaho 50.4%
How many residents match a customer profile?
Residents matching this profile
100% of everyone living in Blaine County
Pick an age range and a women/men split and the figure above answers with how many residents that profile reaches.
Economy
Blaine County has a the economy index of B, which means it is quite prosperous.
| Metric | Blaine County | Idaho Avg | U.S. Average |
|---|---|---|---|
| Median household income | $91,552 | $78,141 | $80,455 |
| Income growth (%/yr) | 5.97% | 5.97% | 4.80% |
| Unemployment rate | 2.1% | 3.7% | 5.2% |
The median household income in Blaine County is about 17% higher than in Idaho.
Housing
| Metric | Blaine County | Idaho Avg | U.S. Average |
|---|---|---|---|
| Median home price | $1,772,727 | $394,140 | $248,835 |
| Median rent | $1,338 | $1,236 | $1,407 |
| Homeownership rate | 73.5% | 72.3% | 65.2% |
The median home price in Blaine County is about 110.4 years' worth of rent — buying at the median price costs roughly as much as paying the median rent of $1,338 per month for that long.
Commute Time & Mobility
Commuters in Blaine County spend about 28 minutes on the road round trip each working day. Over a typical 250-day work year, that adds up to roughly 116 hours, about 4.8 full days, spent commuting.
| Metric | Blaine County | Idaho Avg | U.S. Average |
|---|---|---|---|
| One-way commute (min) | 14.0 | 18.0 | 22.4 |
| Round-trip commute (min) | 27.9 | 35.9 | 44.8 |
| Yearly time spent (hours) | 116 | 150 | 187 |
| Estimated yearly cost | $3,608 | $4,641 | $5,790 |
| Work from home | 14.6% | 13.3% | 15.0% |
| Highway traffic (vehicles/day) | 2,483 | 4,714 | 8,813 |
| Local road traffic (vehicles/day) | 449 | 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 Blaine County is 14 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
Blaine County has a education index of B, which means it is quite educated.
| Metric | Blaine County | Idaho Avg | U.S. Average |
|---|---|---|---|
| Bachelor's degree or higher | 41.7% | 27.1% | 31.6% |
| Average household size | 2.36 | 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
Blaine County has a health index of B, which means it is quite healthy.
| Metric | Blaine County | Idaho Avg | U.S. Average |
|---|---|---|---|
| Life expectancy (years) | 82.2 | 79.5 | 78.3 |
| Self-rated poor health | 12.2% | 15.6% | 16.3% |
| Smokers | 14.0% | 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).
Blaine County, ID Compared With Nearby Counties
How Blaine County, ID compares with the 2 counties closest to it.
| Area | Population | Median household income | Median home price | Commute |
|---|---|---|---|---|
| Blaine County, ID | 24,952 | $91,552 #1/3 | $1,772,727 #1/3 | 14.0 min #1/3 |
| Minidoka County, ID | 22,208 | $69,748 | $48,747 | 16.4 min |
| Jerome County, ID | 25,173 | $71,652 | $275,000 | 18.1 min |
Frequently Asked Questions
Common questions about Blaine County, Idaho.
How many people live in Blaine County, Idaho?
About 24,952 people live in Blaine County, Idaho, in 10,413 households of 2.4 people on average. The median age is 45.9, so residents are older than the U.S. median of 37.3 by about 9 years.
Is Blaine County, Idaho urban or rural?
Averaged over its land area, Blaine County, Idaho has 9 people per square mile, a density typical of rural areas. That is about 11% of the U.S. average of 86.
Can a typical household afford a home in Blaine County, Idaho?
The median home costs 19.4 times the median household income ($1,772,727 against $91,552), compared with 3.1 times nationally. A ratio of about 3 is traditionally considered affordable. Median rent of $1,338 a month takes about 18% 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 Blaine County, Idaho?
Unemployment in Blaine County, Idaho is only 2.1%, well below the U.S. rate of 5.2%, a sign of a tight labor market where employers compete for workers.
How common is a college degree in Blaine County, Idaho?
41.7% of adults in Blaine County, Idaho hold a bachelor's degree or higher (about 1 in 2), well above the U.S. share of 31.6%.
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