Population 24,951 · Census ACS 2020–24
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Population and households in Blaine County
Household size in Blaine County
| Period | Blaine County | Idaho | U.S. |
|---|---|---|---|
| 2006–10 | 2.31 | 2.72 | 2.68 |
| 2010–14 | 2.27 | 2.78 | 2.73 |
| 2015–19 | 2.87 | 2.76 | 2.71 |
| 2020–24 | 2.45 | 2.79 | 2.65 |
| Change | +0.15 | +0.07 | −0.03 |
Households in Blaine County run small, averaging 2.45 people against 2.65 nationally, which usually means more singles and couples and fewer children. Household size has climbed from 2.31 in 2006–10, even as the national average fell. The biggest households, usually families with children, are concentrated in the southeast.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in Blaine County
| Period | Blaine County | Idaho | U.S. |
|---|---|---|---|
| 2006–10 | 40.3 | 35.5 | 37.7 |
| 2010–14 | 43.5 | 36.6 | 38.6 |
| 2015–19 | 44.9 | 37.6 | 39.6 |
| 2020–24 | 46.7 | 38.2 | 40.1 |
| Change | +6.4 | +2.7 | +2.3 |
With a median age of 46.7, Blaine County is noticeably older than the country as a whole (40.1), an age mix that tilts toward empty nesters and retirees. Since 2006–10, the median age has climbed from 40.3, in line with the national trend. The youngest areas are in the southeast, the oldest in the north.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in Blaine County
| Period | Blaine County | Idaho | U.S. |
|---|---|---|---|
| 2006–10 | 6.7% | 10.0% | 12.3% |
| 2010–14 | 12.9% | 10.2% | 12.3% |
| 2015–19 | 11.0% | 9.3% | 11.6% |
| 2020–24 | 9.7% | 9.3% | 11.6% |
| Change | +3.0 pts | −0.7 pts | −0.6 pts |
Single-parent households are a bit less common in Blaine County than nationally: 9.7%, against 11.6%. That is in line with the rest of Idaho. The single-parent share is up 3.0 points from 2006–10, even as the national share fell.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in Blaine County
Renters in Blaine County
| Period | Blaine County | Idaho | U.S. |
|---|---|---|---|
| 2006–10 | 31.7% | 29.0% | 33.3% |
| 2010–14 | 33.0% | 30.8% | 35.6% |
| 2015–19 | 29.9% | 30.0% | 36.0% |
| 2020–24 | 26.5% | 27.9% | 34.8% |
| Change | −5.2 pts | −1.1 pts | +1.5 pts |
Just over a quarter of households in Blaine County rent their homes (26.5%), below the national share of 34.8%; the rest own. Nearly half of owners (47.0%) have paid off their mortgages, above the national share of 39.8%. Rentals cluster in the southeast; owners are most common in the north. Since 2006–10, the renter share has fallen 5.2 points, even as the national share rose.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in Blaine County
| Period | Blaine County | Idaho | U.S. |
|---|---|---|---|
| 2006–10 | 28.9% | 10.4% | 11.4% |
| 2010–14 | 28.2% | 11.0% | 11.4% |
| 2015–19 | 36.2% | 10.5% | 11.1% |
| 2020–24 | 23.6% | 9.3% | 9.6% |
| Change | −5.2 pts | −1.1 pts | −1.8 pts |
Vacancy is high in Blaine County: 23.6% of homes are empty, far above the national rate of 9.6%. In resort and lake areas that usually means seasonal and vacation homes; elsewhere it can point to weak demand. Vacancy has fallen 5.2 points since 2006–10, in line with the national trend.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in Blaine County
| Period | Blaine County | Idaho | U.S. |
|---|---|---|---|
| 2006–10 | 1985 | 1982 | 1974 |
| 2010–14 | 1985 | 1984 | 1975 |
| 2015–19 | 1988 | 1986 | 1977 |
| 2020–24 | 1987 | 1989 | 1980 |
| Change | +2 | +7 | +6 |
The housing in Blaine County is younger than the country's: half of it was built after 1987, against 1980 nationally. That is in line with the rest of Idaho. Newer construction is concentrated in the north, while the southeast has the oldest housing.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in Blaine County
| Period | Blaine County | Idaho | U.S. |
|---|---|---|---|
| 2006–10 | $898 | $766 | $965 |
| 2010–14 | $1,071 | $820 | $1,040 |
| 2015–19 | $1,110 | $941 | $1,213 |
| 2020–24 | $1,337 | $1,407 | $1,571 |
| Change | +$439 | +$641 | +$606 |
A typical rental in Blaine County costs $1,337 a month with utilities, below the national median of $1,571. Rents are up $439 a month from 2006–10, a 49% rise, a slower climb than the nation's. The typical renter here spends 24.6% of household income on rent, comfortably under the 30% mark often used to define affordable rent, and a smaller share than renters pay nationally. Rents run highest in the north and lowest in the east.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in Blaine County
Bachelor's degrees in Blaine County
| Period | Blaine County | Idaho | U.S. |
|---|---|---|---|
| 2006–10 | 42.3% | 25.0% | 28.4% |
| 2010–14 | 43.5% | 25.9% | 29.6% |
| 2015–19 | 37.6% | 27.8% | 32.1% |
| 2020–24 | 48.1% | 31.7% | 35.6% |
| Change | +5.8 pts | +6.6 pts | +7.2 pts |
College graduates are unusually common in Blaine County: 48.1% of adults 25 and older have a bachelor's degree or higher, against 35.6% nationally. Education tends to track local incomes and the kinds of jobs nearby. Since 2006–10, the share with a degree has risen 5.8 points, as it has nationally. Only one other Idaho county has a higher share of college graduates.
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in Blaine County
| Period | Blaine County | Idaho | U.S. |
|---|---|---|---|
| 2006–10 | 91.5% | 88.7% | 84.9% |
| 2010–14 | 89.5% | 89.3% | 86.1% |
| 2015–19 | 89.2% | 90.8% | 87.7% |
| 2020–24 | 91.8% | 92.1% | 89.3% |
| Change | +0.2 pts | +3.4 pts | +4.3 pts |
High school completion in Blaine County is a bit above the national rate: 91.8% of adults have a diploma or equivalent, against 89.3%. Idaho as a whole looks much the same.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in Blaine County
| Period | Blaine County | Idaho | U.S. |
|---|---|---|---|
| 2006–10 | 5.6% | 7.0% | 8.1% |
| 2010–14 | 4.8% | 8.1% | 9.4% |
| 2015–19 | 2.0% | 4.4% | 5.6% |
| 2020–24 | 2.0% | 3.8% | 5.4% |
| Change | −3.6 pts | −3.2 pts | −2.7 pts |
The job market in Blaine County has been strong: just 2.0% of the labor force was out of work and looking, well below the national rate of 5.4%. Since 2006–10, unemployment has fallen 3.6 points, as it has nationally. Because the Census pools five years of responses (2020–24), these rates smooth over short swings and lag the current job market.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
Blaine County compared with nearby counties
| County | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Blaine County | 2.45 | 46.7 | 9.7% | 26.5% | 23.6% | 1987 | $1,337 | 48.1% | 91.8% | 2.0% |
| Butte County | 2.52 | 41.5 | 8.1% | 22.5% | 19.7% | 1969 | $619 | 17.8% | 89.2% | 4.5% |
| Ada County | 2.61 | 39.2 | 8.7% | 29.2% | 5.6% | 1997 | $1,861 | 44.2% | 95.2% | 3.0% |
| Bonneville County | 3.00 | 34.2 | 9.3% | 28.3% | 7.7% | 1987 | $1,388 | 33.6% | 92.1% | 4.4% |
| Canyon County | 2.93 | 35.6 | 10.8% | 24.5% | 4.7% | 1995 | $1,454 | 23.6% | 87.8% | 3.6% |
| Jefferson County | 3.27 | 32.7 | 8.9% | 17.0% | 5.2% | 1994 | $1,282 | 28.2% | 93.3% | 2.7% |
| Teton County | 2.94 | 40.0 | 6.3% | 19.2% | 28.5% | 2000 | $1,448 | 49.3% | 92.6% | 1.0% |
| Teton County | 2.31 | 42.0 | 7.9% | 41.7% | 26.0% | 1988 | $2,172 | 61.5% | 96.9% | 1.0% |
| Harney County | 2.38 | 49.8 | 7.5% | 32.6% | 15.8% | 1973 | $717 | 18.0% | 91.2% | 4.0% |
| Hot Springs County | 2.20 | 43.1 | 7.8% | 27.3% | 12.5% | 1974 | $1,081 | 26.5% | 95.2% | 3.0% |
| Jackson County | 3.48 | 34.8 | 27.1% | 32.7% | 21.1% | 1982 | $480 | 14.0% | 90.3% | 8.1% |
All figures 2020–24.
Counties with similar populations: Edgefield County, SC · Teton County, WY · Fayette County, TX · Fayette County, OH · Fayette County, AL · Wayne County, GA · Fajardo Municipio, PR · Elmore County, ID · Elk County, PA · Bibb County, AL
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Blaine County. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
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