Boise County, Idaho Demographics 2026
Boise County, Idaho has a population of 8,273, the 32nd most populous county in Idaho. The median household income is $78,774 and the median home value is $476,100. The poverty rate is 7.7%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Boise County Quick Facts
How Boise County Changed
Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.
| Metric | 2019–2023 | 2020–2024 | Change |
|---|---|---|---|
| Population | 8,045 | 8,273 | +2.8% |
| Median household income | $77,349 | $78,774 | +1.8% |
| Median home value | $424,100 | $476,100 | +12.3% |
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 36 | National average: 61
Education
Educational Attainment (Adults 25+)
Cities & Places in Boise County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Robie Creek | 1,213 | $106,250 | 2.5% | $585,400 |
| Horseshoe Bend | 758 | $65,500 | 17.2% | $276,900 |
| Idaho City | 581 | $44,722 | 6.4% | N/A |
| Garden Valley | 438 | N/A | 11.2% | $782,100 |
| Crouch | 214 | $78,226 | 8.4% | $486,700 |
| Lowman | 46 | N/A | 43.5% | $220,000 |
| Placerville | 30 | $63,125 | 3.3% | $412,500 |
Explore Idaho Rankings
Population Overview
Boise County is located in Idaho with a total population of 8,273. It is the 32nd most populous county out of 44 in Idaho. The county encompasses 7 Census-designated places.
Age Demographics
The median age in Boise County is 53.4 years. This is 43% higher than the state median of 37.3 years.
Economy, Income & Housing
The median household income in Boise County is $78,774. This is 1% higher than the state median of $77,800. It is also 2% lower than the national median of $80,734. The poverty rate stands at 7.7%. This is 27% lower than the state poverty rate of 10.6%. The unemployment rate is 3.4%. This is 9% lower than the state rate of 3.7%. The median home value is $476,100. Housing costs are 14% higher than the state median of $418,600. The home-value-to-income ratio is 6.0x. 90.3% of occupied housing units are owner-occupied. This homeownership rate is 25% higher than the state average of 72.1%.
Race & Ethnicity
The largest racial or ethnic group in Boise County is White (non-Hispanic), making up 83.5% of the population. Hispanic or Latino residents account for 5.1%. The Black or African American population (0.2%) is well below the state average of 0.7%. The Hispanic or Latino population (5.1%) is well below the state average of 13.7%.
Education
31.2% of residents aged 25 and older hold a bachelor's degree or higher. This is 2% lower than the state rate of 31.8%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 95.9%.
Data Sources & Methodology
All figures for Boise County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Idaho and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.
Frequently Asked Questions
What is the population of Boise County, Idaho?
Boise County has a population of 8,273, making it the 32nd most populous county in Idaho.
What is the median income in Boise County?
The median household income in Boise County is $78,774 with a poverty rate of 7.7%.
How many cities are in Boise County, Idaho?
Boise County contains 7 Census-designated places.