Adams County Demographics

A map of Adams County's Population by Race

Adams County, Washington had a population of 20,613 in 2020. It was 33.1% White, 0.1% Black, 0.6% Asian, 63.6% Hispanic, 0.7% Native American/Other, and 1.7% Multiracial. This map presents the population of Adams County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Adams County is the 31st most populous county of the 39 counties in Washington.

Adams County's White Population

6,829 residents of Adams County identify as White, or 33.1%. This makes the White share of the population of Adams County considerably less than the White share of the population of Washington (63.8% White). Of the 39 counties in Washington, Adams County is ranked #39 in terms of White residents as a share of the population.

Adams County is less White than neighboring Franklin County (38.5% White), Lincoln County (88% White), Walla Walla County (68% White), Grant County (50.7% White), and Columbia County (84.7% White).

Adams County's Black Population

24 residents of Adams County identify as Black, or 0.1%. This makes the Black share of the population of Adams County roughly similar to the Black share of the population of Washington (3.8% Black). Of the 39 counties in Washington, Adams County is ranked #39 in terms of Black residents as a share of the population.

Adams County is less Black than neighboring Franklin County (1.7% Black), Walla Walla County (1.6% Black), Grant County (0.7% Black), and Columbia County (0.2% Black).

Adams County's Asian Population

129 residents of Adams County identify as Asian, or 0.6%. This makes the Asian share of the population of Adams County slightly less than the Asian share of the population of Washington (9.4% Asian). Of the 39 counties in Washington, Adams County is ranked #32 in terms of Asian residents as a share of the population.

Adams County is more Asian than neighboring Columbia County (0.5% Asian). Adams County is less Asian than neighboring Franklin County (1.9% Asian), Walla Walla County (1.5% Asian), and Grant County (1.2% Asian).

Adams County's Hispanic Population

13,120 residents of Adams County identify as Hispanic, or 63.6%. This makes the Hispanic share of the population of Adams County considerably larger than the Hispanic share of the population of Washington (13.7% Hispanic). Of the 39 counties in Washington, Adams County is ranked #1 in terms of Hispanic residents as a share of the population.

Adams County is more Hispanic than neighboring Franklin County (54.2% Hispanic), Lincoln County (3.5% Hispanic), Walla Walla County (22.7% Hispanic), Grant County (42.8% Hispanic), and Columbia County (7.7% Hispanic).

Adams County's Native American/Other Population

153 residents of Adams County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 0.7%. This makes the Native American/Other share of the population of Adams County roughly similar to the Native American/Other share of the population of Washington (2.6% Native American/Other). Of the 39 counties in Washington, Adams County is ranked #39 in terms of Native American/Other residents as a share of the population.

Adams County is less Native American/Other than neighboring Franklin County (1% Native American/Other), Lincoln County (2.5% Native American/Other), Walla Walla County (1.3% Native American/Other), Grant County (1.3% Native American/Other), and Columbia County (1.5% Native American/Other).

Adams County's Multiracial Population

358 residents of Adams County identify as Multiracial, or 1.7%. This makes the Multiracial share of the population of Adams County roughly similar to the Multiracial share of the population of Washington (6.6% Multiracial). Of the 39 counties in Washington, Adams County is ranked #39 in terms of Multiracial residents as a share of the population.

Adams County is less Multiracial than neighboring Franklin County (2.8% Multiracial), Lincoln County (5.1% Multiracial), Walla Walla County (4.9% Multiracial), Grant County (3.4% Multiracial), and Columbia County (5.4% Multiracial).

Source: 2020 Census State Redistricting Data and Census TIGER/Line Shapefiles.