Washington County is a county in the U.S. state of Idaho. As of the 2020 census, the population was 10,500. The county seat and largest city is Weiser, 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 According to the U.S. Census Bureau, the county has a total area of , of which is land and (1.4%) is water.

Adjacent counties Adams County - north Gem County - east Payette County - south Malheur County, Oregon - southwest Baker County, Oregon - west

Major highways US 95

National protected areas Boise National Forest (part) Deer Flat National Wildlife Refuge (part) Payette National Forest (part)

Rivers Snake River Weiser River

Reservoirs Brownlee Crane Creek Mann Creek Paddock Valley

Demographics

Racial and ethnic composition +Washington County, Idaho – Racial and ethnic compositionRace / Ethnicity (NH = Non-Hispanic)Pop 1980Pop 1990Pop 2000Pop 2010 Pop 2020% 1980% 1990% 2000% 2010% 2020White alone (NH)8,0017,4548,2948,1668,11890.89%87.18%83.13%80.07%77.31%Black or African American alone (NH)261010170.02%0.07%0.10%0.10%0.16%Native American or Alaska Native alone (NH)32454275740.36%0.53%0.42%0.74%0.70%Asian alone (NH)13412310390811.52%1.44%1.03%0.88%0.77%Native Hawaiian or Pacific Islander alone (NH)x included in the Asian category in the 1980 Censusx included in the Asian category in the 1990 Census337xx0.03%0.03%0.07%Other race alone (NH)1871912530.20%0.08%0.19%0.12%0.50%Mixed race or Multiracial (NH)x not an option in the 1980 Censusx not an option in the 1990 Census134126488xx1.34%1.24%4.65%Hispanic or Latino (any race)6169151,3721,7161,6627.00%10.70%13.75%16.83%15.83%Total8,8038,5509,97710,19810,500 100.00%100.00%100.00%100.00%100.00%

2020 census 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.

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.

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%.

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.

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

2010 census As of the 2010 United States census, there were 10,198 people, 4,034 households, and 2,803 families living in the county. The population density was . There were 4,529 housing units at an average density of . 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. In terms of ancestry, 20.0% were English, 18.2% were German, 14.8% were Irish, and 9.6% were American.

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.

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.

Education The county is served by three school districts based in the county:

Weiser District #431 Weiser High School Weiser Middle School Park Intermediate School Pioneer Primary School. Cambridge Joint District #432 Cambridge Junior-Senior High School Cambridge Elementary School Midvale District #433 Midvale Senior High School. Midvale Junior High School Midvale Elementary School

Additionally Payette Joint School District 371 includes a portion of Washington County. - Text list

Washington County is in the area (but not the taxing region) of the College of Western Idaho, which has its main campus in Nampa. - See the map. Also see area 3 in:

Communities Cities Cambridge Midvale Weiser

Politics

Healthcare The county is served by the Southwest Idaho Health District.

See also National Register of Historic Places listings in Washington County, Idaho

References

External links

County Parcel Map State of Idaho official site - Washington County