Washington County, Idaho

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Template:Infobox U.S. county

Washington County is a county in the U.S. state of Idaho. As of the 2020 census, the population was 10,500.[1] The county seat and largest city is Weiser,[2] with over half of the county's population. The county was established in 1879 when Idaho was a territory and named after U.S. President George Washington.

Geography

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According to the U.S. Census Bureau, the county has a total area of 1,474 square miles (3,820 km2), of which 1,453 square miles (3,760 km2) is land and 21 square miles (54 km2) (1.4%) is water.[3]

Adjacent counties

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Major highways

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  • File:US 95.svg US 95
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National protected areas

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Rivers

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Reservoirs

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Demographics

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Template:US Census population

2020 census

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As of the 2020 census, the county had a population of 10,500 and a median age of 46.0 years. 23.4% of residents were under the age of 18 and 26.0% of residents were 65 years of age or older. For every 100 females there were 96.8 males, and for every 100 females age 18 and over there were 95.0 males age 18 and over.[4]

The 2020 census recorded 4,087 households in the county, of which 28.7% had children under the age of 18 living with them and 22.9% had a female householder with no spouse or partner present. About 25.0% of all households were made up of individuals and 14.2% had someone living alone who was 65 years of age or older.[4]

The 2020 census recorded 4,514 housing units, of which 9.5% were vacant. Among occupied housing units, 75.2% were owner-occupied and 24.8% were renter-occupied. The homeowner vacancy rate was 1.4% and the rental vacancy rate was 3.5%.[4]

The racial makeup recorded by the 2020 census was 81.6% White, 0.2% Black or African American, 1.1% American Indian and Alaska Native, 0.8% Asian, 0.1% Native Hawaiian and Pacific Islander, 7.6% from some other race, and 8.6% from two or more races. Hispanic or Latino residents of any race comprised 15.8% of the population.[5]

The 2020 census reported that 52.4% of residents lived in urban areas, while 47.6% lived in rural areas.[6]

Racial and ethnic composition

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Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos can be of any race.

Washington County racial composition
(NH = Non-Hispanic)[7][8]
Race Pop 2010 Pop 2020 % 2010 % 2020
White (NH) 8,166 8,118 80.07% 77.31%
Black or African American (NH) 10 17 0.1% 0.16%
Native American or Alaska Native (NH) 75 74 0.74% 0.7%
Asian (NH) 90 81 0.88% 0.77%
Pacific Islander (NH) 3 7 0.03% 0.07%
Some Other Race (NH) 12 53 0.12% 0.5%
Mixed/Multi-Racial (NH) 126 488 1.24% 4.65%
Hispanic or Latino 1,716 1,662 16.83% 15.83%
Total 10,198 10,500

2010 census

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As of the 2010 United States census, there were 10,198 people, 4,034 households, and 2,803 families living in the county.[9] The population density was 7.0 inhabitants per square mile (2.7/km2). There were 4,529 housing units at an average density of 3.1 units per square mile (1.2 units/km2).[10] The racial makeup of the county was 86.6% white, 1.0% American Indian, 0.9% Asian, 0.2% black or African American, 9.1% from other races, and 2.2% from two or more races. Those of Hispanic or Latino origin made up 16.8% of the population.[9] In terms of ancestry, 20.0% were English, 18.2% were German, 14.8% were Irish, and 9.6% were American.[11]

Of the 4,034 households, 30.4% had children under the age of 18 living with them, 54.9% were married couples living together, 9.7% had a female householder with no husband present, 30.5% were non-families, and 25.8% of all households were made up of individuals. The average household size was 2.50 and the average family size was 2.99. The median age was 43.6 years.[9]

The median income for a household in the county was $30,625, and the median income for a family was $35,542. Males had a median income of $27,222 versus $18,053 for females. The per capita income for the county was $15,464. About 10.00% of families and 13.30% of the population were below the poverty line, including 16.60% of those under age 18 and 9.90% of those age 65 or over.[12]

Education

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The county is served by three school districts based in the county:[13]

Additionally Payette Joint School District 371 includes a portion of Washington County.[16]

Washington County is in the area (but not the taxing region) of the College of Western Idaho, which has its main campus in Nampa.[17]

Communities

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Cities

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Politics

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United States presidential election results for Washington County, Idaho[18]
Year Republican Democratic Third party
No.  % No.  % No.  %
"text-align:center;" Template:Party shading/Populist |1892 317 36.15% 0 0.00% 560 63.85%
1896 204 19.62% 828 79.62% 8 0.77%
1900 1,194 46.95% 1,349 53.05% 0 0.00%
1904 1,894 60.69% 931 29.83% 296 9.48%
1908 1,819 51.56% 1,452 41.16% 257 7.28%
1912 724 25.32% 1,065 37.25% 1,070 37.43%
1916 1,545 44.43% 1,802 51.83% 130 3.74%
1920 1,864 59.59% 1,264 40.41% 0 0.00%
1924 1,183 41.33% 623 21.77% 1,056 36.90%
1928 1,973 66.39% 974 32.77% 25 0.84%
1932 1,213 34.65% 2,122 60.61% 166 4.74%
1936 1,234 34.70% 2,147 60.38% 175 4.92%
1940 1,903 45.27% 2,296 54.61% 5 0.12%
1944 2,002 51.95% 1,849 47.98% 3 0.08%
1948 1,713 49.21% 1,700 48.84% 68 1.95%
1952 2,616 64.91% 1,411 35.01% 3 0.07%
1956 2,272 57.89% 1,653 42.11% 0 0.00%
1960 2,251 55.86% 1,779 44.14% 0 0.00%
1964 1,730 46.99% 1,952 53.01% 0 0.00%
1968 2,020 57.65% 1,033 29.48% 451 12.87%
1972 2,264 61.99% 935 25.60% 453 12.40%
1976 2,044 53.47% 1,693 44.28% 86 2.25%
1980 2,915 63.58% 1,421 30.99% 249 5.43%
1984 3,015 71.99% 1,119 26.72% 54 1.29%
1988 2,380 61.98% 1,359 35.39% 101 2.63%
1992 1,802 42.09% 1,122 26.21% 1,357 31.70%
1996 2,318 54.90% 1,314 31.12% 590 13.97%
2000 2,899 71.23% 980 24.08% 191 4.69%
2004 3,274 75.11% 1,033 23.70% 52 1.19%
2008 3,168 70.31% 1,241 27.54% 97 2.15%
2012 3,128 72.22% 1,104 25.49% 99 2.29%
2016 3,283 73.69% 776 17.42% 396 8.89%
2020 4,154 77.70% 1,073 20.07% 119 2.23%
2024 4,429 79.73% 1,010 18.18% 116 2.09%
2016 1 33.33% 1 33.33% 1 33.33%


Healthcare

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The county is served by the Southwest Idaho Health District.[19]

See also

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References

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  1. "Washington County, Idaho". United States Census Bureau. Retrieved June 25, 2023.
  2. "Find a County". National Association of Counties. Retrieved June 7, 2011.
  3. "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. February 12, 2011. Retrieved April 23, 2011.
  4. 4.0 4.1 4.2 "2020 Decennial Census Demographic Profile (DP1)". United States Census Bureau. 2021. Retrieved December 20, 2025.
  5. "2020 Decennial Census Redistricting Data (Public Law 94-171)". United States Census Bureau. 2021. Retrieved December 20, 2025.
  6. "2020 Decennial Census Demographic and Housing Characteristics (DHC)". United States Census Bureau. 2023. Retrieved December 20, 2025.
  7. "Explore Census Data". data.census.gov. Retrieved March 15, 2022.
  8. "Explore Census Data". data.census.gov. Retrieved March 15, 2022.
  9. 9.0 9.1 9.2 "DP-1 Profile of General Population and Housing Characteristics: 2010 Demographic Profile Data". United States Census Bureau. Archived from the original on February 13, 2020. Retrieved January 9, 2016.
  10. "Population, Housing Units, Area, and Density: 2010 - County". United States Census Bureau. Archived from the original on February 13, 2020. Retrieved January 9, 2016.
  11. "DP02 SELECTED SOCIAL CHARACTERISTICS IN THE UNITED STATES – 2006-2010 American Community Survey 5-Year Estimates". United States Census Bureau. Archived from the original on February 13, 2020. Retrieved January 9, 2016.
  12. "DP03 SELECTED ECONOMIC CHARACTERISTICS – 2006-2010 American Community Survey 5-Year Estimates". United States Census Bureau. Archived from the original on February 13, 2020. Retrieved January 9, 2016.
  13. 13.0 13.1 Education, Idaho State Department of (April 15, 2009). "Idaho Educational Directory 2008-09" (PDF). Retrieved May 26, 2009.
  14. District, Weiser School (2008). "Welcome to Weiser Schools!". Retrieved May 26, 2009.
  15. District, Midvale School (2009). "Home". Retrieved May 26, 2009.
  16. "2020 CENSUS - SCHOOL DISTRICT REFERENCE MAP: Washington County, ID" (PDF). U.S. Census Bureau. Archived (PDF) from the original on July 29, 2022. Retrieved July 29, 2022. - Text list
  17. "College of Western Idaho, pg. 1-77" (PDF). Idaho Legislature. January 26, 2022. Retrieved March 12, 2024. - See the map. Also see area 3 in: "TITLE 33 EDUCATION CHAPTER 21 JUNIOR COLLEGES". Idaho Legislature. Retrieved March 12, 2024.
  18. Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org. Retrieved April 4, 2018.
  19. Luchetta, Julie; Oppie, Troy (October 23, 2024). "Southwest Idaho Health District Board pulls COVID vaccines from its clinics". Boise State Public Radio. Retrieved October 27, 2024.
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Template:Geographic Location Template:Washington County, Idaho Template:Idaho Coordinates: 44°27′N 116°47′W / 44.45°N 116.78°W / 44.45; -116.78