Population By Race and Ethnicity in Washington, ID in 2018

Updated on June 16, 2025.

Based on the US Census Vintage data estimates, in 2018, the 10,070 population of Washington County, Idaho comprised of 1,690 people who identified as Hispanic (16.78%), and 8,380 people who identified as Non-Hispanic (83.22%).

Race: The White Alone population was the largest racial group in Washington County, Idaho with a population of 9,498 (94.32%); Two Or More Races population was the second largest racial group with a population of 231 (2.29%); and American Indian and Alaska Native Alone was the third largest racial group with a population of 171 (1.7%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Washington County, Idaho in 2018, with a population of 7,980 (79.25%); the second largest ethnic group was White Alone - Hispanic with a population of 1,518 (15.07%); and the third largest ethnic group was Two Or More Races - Non Hispanic with a population of 180 (1.79%).

The charts and tables below shows the population and percentage of each racial and ethnicity group in Washington, Idaho.

You can find similar information for other Idaho counties, and for Idaho.

See this for other years:
Hispanics and Non Hispanics in Washington, ID in 2018
Total Population:
Race in Washington, ID in 2018
Total Population:
Ethnicity in Washington, ID in 2018
Total Population:
Population By Race in Washington , ID in 2018
RacePopulationPercentage
Black or African American Alone 52 0.52%
White Alone 9,498 94.32%
American Indian and Alaska Native Alone 171 1.7%
Asian Alone 103 1.02%
Native Hawaiian And Pacific Islander Alone 15 0.15%
Two Or More Races 231 2.29%
Population By Ethnicity in Washington , ID in 2018
EthnicityPopulationPercentage
Black or African American Alone - Hispanic 25 0.25%
White Alone - Hispanic 1,518 15.07%
American Indian and Alaska Native Alone - Hispanic 67 0.67%
Asian Alone - Hispanic 17 0.17%
Native Hawaiian And Pacific Islander Alone - Hispanic 12 0.12%
Two Or More Races - Hispanic 51 0.51%
Black or African American Alone - Non Hispanic 27 0.27%
White Alone - Non Hispanic 7,980 79.25%
American Indian and Alaska Native Alone - Non Hispanic 104 1.03%
Asian Alone - Non Hispanic 86 0.85%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 3 0.03%
Two Or More Races - Non Hispanic 180 1.79%