Owyhee County, ID Demographics

Population 12,503 · Census ACS 2020–24

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Owyhee County, ID map of median age by neighborhood
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Population and households in Owyhee County

Household size in Owyhee County

Household size, people per household
PeriodOwyhee CountyBoise areaIdahoU.S.
2006–102.822.752.722.68
2010–142.902.792.782.73
2015–192.652.752.762.71
2020–242.872.712.792.65
Change+0.05−0.05+0.07−0.03
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Households in Owyhee County average 2.87 people, above the national 2.65, so families with children are more common here. Household size has crept up from 2.82 in 2006–10, even as the national average fell. Households are largest in the northwest and smallest in the center.

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 Owyhee County

Median age, years
PeriodOwyhee CountyBoise areaIdahoU.S.
2006–1035.734.635.537.7
2010–1436.835.836.638.6
2015–1940.037.237.639.6
2020–2440.838.438.240.1
Change+5.1+3.8+2.7+2.3
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At 40.8, the median age in Owyhee County is close to the national median of 40.1, so its age mix looks much like the country's. The population here is older than in the Boise area as a whole, where the median age is 38.4. The median age has climbed from 35.7 in 2006–10, in line with the national trend.

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 Owyhee County

Single-parent households, % of households
PeriodOwyhee CountyBoise areaIdahoU.S.
2006–108.7%10.5%10.0%12.3%
2010–1413.1%10.4%10.2%12.3%
2015–1910.4%9.5%9.3%11.6%
2020–248.6%9.3%9.3%11.6%
Change−0.0 pts−1.2 pts−0.7 pts−0.6 pts
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Single-parent households are less common in Owyhee County than nationally: 8.6%, against 11.6%. The Boise area as a whole looks much the same.

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 Owyhee County

Renters in Owyhee County

Renters, % of occupied homes
PeriodOwyhee CountyBoise areaIdahoU.S.
2006–1032.2%29.5%29.0%33.3%
2010–1434.6%31.9%30.8%35.6%
2015–1929.1%30.3%30.0%36.0%
2020–2427.4%27.5%27.9%34.8%
Change−4.8 pts−2.0 pts−1.1 pts+1.5 pts
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More than a quarter of households in Owyhee County rent their homes (27.4%), below the national share of 34.8%; the rest own. Among homeowners, 44.4% have no mortgage at all, above the national share of 39.8%. Since 2006–10, the renter share has fallen 4.8 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 Owyhee County

Vacant homes, % of all homes
PeriodOwyhee CountyBoise areaIdahoU.S.
2006–1012.7%7.9%10.4%11.4%
2010–1416.8%7.2%11.0%11.4%
2015–1911.3%5.6%10.5%11.1%
2020–2410.1%5.6%9.3%9.6%
Change−2.6 pts−2.3 pts−1.1 pts−1.8 pts
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Vacancy in Owyhee County is close to the national rate: 10.1% of homes are empty, against 9.6%. The rate is higher than in the Boise area as a whole (5.6%). Since 2006–10, vacancy has fallen 2.6 points, as it has nationally.

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 Owyhee County

Age of homes, median year built
PeriodOwyhee CountyBoise areaIdahoU.S.
2006–101980198919821974
2010–141979198919841975
2015–191981199119861977
2020–241984199619891980
Change+4+7+7+6
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The housing in Owyhee County is a little younger than the country's: half of it was built after 1984, against 1980 nationally. Locally, though, homes here are older than in the Boise area as a whole, where the median home dates to 1996. The median year built has moved up from 1980 in 2006–10, a sign of steady new building.

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 Owyhee County

Rent, per month
PeriodOwyhee CountyBoise areaIdahoU.S.
2006–10$549$884$766$965
2010–14$635$921$820$1,040
2015–19$703$1,075$941$1,213
2020–24$991$1,700$1,407$1,571
Change+$442+$815+$641+$606
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The median renter in Owyhee County pays $991 a month for rent and utilities, well below the national median of $1,571. Rents are up $442 a month from 2006–10, an 81% jump, faster than rents rose nationally. The typical renter here spends 26.0% 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 center.

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 Owyhee County

Bachelor's degrees in Owyhee County

Bachelor's degrees, % of adults 25+
PeriodOwyhee CountyBoise areaIdahoU.S.
2006–109.8%28.8%25.0%28.4%
2010–148.5%30.0%25.9%29.6%
2015–1911.7%31.6%27.8%32.1%
2020–2412.4%36.9%31.7%35.6%
Change+2.6 pts+8.2 pts+6.6 pts+7.2 pts
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Fewer adults in Owyhee County have a four-year degree than in the country as a whole: 12.4%, against 35.6% nationally. The share with a degree has risen 2.6 points since 2006–10, mirroring the country. Only one other Idaho county has a lower 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 Owyhee County

High school graduates, % of adults 25+
PeriodOwyhee CountyBoise areaIdahoU.S.
2006–1075.1%89.5%88.7%84.9%
2010–1473.7%90.1%89.3%86.1%
2015–1975.8%91.7%90.8%87.7%
2020–2478.7%92.7%92.1%89.3%
Change+3.6 pts+3.2 pts+3.4 pts+4.3 pts
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Just over one in five adults in Owyhee County never finished high school, well above the national share: only 78.7% have a diploma or equivalent, against 89.3% nationally. Since 2006–10, the share with a diploma has risen 3.6 points, in line with the national trend. Few Idaho counties have a lower share of high school graduates: only two of 44.

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 Owyhee County

Unemployment, % of the labor force
PeriodOwyhee CountyBoise areaIdahoU.S.
2006–1011.1%7.7%7.0%8.1%
2010–1413.6%8.4%8.1%9.4%
2015–193.6%4.3%4.4%5.6%
2020–242.0%3.2%3.8%5.4%
Change−9.1 pts−4.5 pts−3.2 pts−2.7 pts
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The job market in Owyhee 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 9.1 points, a much bigger shift than 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).

Owyhee County compared with nearby counties

CountyHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
Owyhee County2.8740.88.6%27.4%10.1%1984$99112.4%78.7%2.0%
Camas County3.0436.84.1%20.0%47.4%1991$1,00034.4%87.0%0.0%
Bingham County3.1035.310.3%19.5%9.8%1982$97221.5%89.1%5.6%
Bonneville County3.0034.29.3%28.3%7.7%1987$1,38833.6%92.1%4.4%
Teton County2.3142.07.9%41.7%26.0%1988$2,17261.5%96.9%1.0%
Douglas County2.3446.710.6%27.3%7.2%1977$1,12919.0%91.2%5.3%
Coos County2.2748.311.9%28.8%10.1%1972$1,14122.3%91.4%6.0%
Fall River County1.9453.89.4%27.6%12.5%1963$91630.6%92.2%2.9%
Bennett County3.8529.025.7%38.8%20.1%1976$62616.6%85.9%9.1%
Todd County3.6426.035.6%53.7%11.7%1982$53716.5%82.8%17.6%
Tripp County2.4745.411.7%31.6%16.4%1966$77617.4%88.3%2.1%

All figures 2020–24.

Counties with similar populations: Lynn County, TX · Pershing County, NV · Perry County, TN · Perry County, MO · Perry County, IN · Perry County, AR · Perry County, AL · Macon County, AL · Lyon County, IA · Phelps County, NE

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 Owyhee 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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