Columbia County Demographics

A map of Columbia County's Population by Race

Columbia County, Washington had a population of 3,952 in 2020. It was 84.7% White, 0.2% Black, 0.5% Asian, 7.7% Hispanic, 1.5% Native American/Other, and 5.4% Multiracial. This map presents the population of Columbia County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Columbia County is the 38th most populous county of the 39 counties in Washington.

Columbia County's White Population

3,347 residents of Columbia County identify as White, or 84.7%. This makes the White share of the population of Columbia County considerably larger than the White share of the population of Washington (63.8% White). Of the 39 counties in Washington, Columbia County is ranked #7 in terms of White residents as a share of the population.

Columbia County is more White than neighboring Walla Walla County (68% White), Whitman County (74.1% White), and Adams County (33.1% White). Columbia County is less White than neighboring Garfield County (89.9% White), and Asotin County (87.4% White).

Columbia County's Black Population

6 residents of Columbia County identify as Black, or 0.2%. This makes the Black share of the population of Columbia County roughly similar to the Black share of the population of Washington (3.8% Black). Of the 39 counties in Washington, Columbia County is ranked #36 in terms of Black residents as a share of the population.

Columbia County is more Black than neighboring Garfield County (0.1% Black), and Adams County (0.1% Black). Columbia County is less Black than neighboring Walla Walla County (1.6% Black), Asotin County (0.5% Black), and Whitman County (2.4% Black).

Columbia County's Asian Population

21 residents of Columbia County identify as Asian, or 0.5%. This makes the Asian share of the population of Columbia County slightly less than the Asian share of the population of Washington (9.4% Asian). Of the 39 counties in Washington, Columbia County is ranked #37 in terms of Asian residents as a share of the population.

Columbia County is more Asian than neighboring Garfield County (0.4% Asian). Columbia County is less Asian than neighboring Walla Walla County (1.5% Asian), Asotin County (0.9% Asian), Whitman County (7.5% Asian), and Adams County (0.6% Asian).

Columbia County's Hispanic Population

304 residents of Columbia County identify as Hispanic, or 7.7%. This makes the Hispanic share of the population of Columbia County slightly less than the Hispanic share of the population of Washington (13.7% Hispanic). Of the 39 counties in Washington, Columbia County is ranked #27 in terms of Hispanic residents as a share of the population.

Columbia County is more Hispanic than neighboring Garfield County (4.8% Hispanic), and Asotin County (4.1% Hispanic). Columbia County is less Hispanic than neighboring Walla Walla County (22.7% Hispanic), Whitman County (8.4% Hispanic), and Adams County (63.6% Hispanic).

Columbia County's Native American/Other Population

59 residents of Columbia County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 1.5%. This makes the Native American/Other share of the population of Columbia 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, Columbia County is ranked #29 in terms of Native American/Other residents as a share of the population.

Columbia County is more Native American/Other than neighboring Garfield County (1% Native American/Other), Walla Walla County (1.3% Native American/Other), Whitman County (1.4% Native American/Other), and Adams County (0.7% Native American/Other). Columbia County is less Native American/Other than neighboring Asotin County (1.7% Native American/Other).

Columbia County's Multiracial Population

215 residents of Columbia County identify as Multiracial, or 5.4%. This makes the Multiracial share of the population of Columbia County roughly similar to the Multiracial share of the population of Washington (6.6% Multiracial). Of the 39 counties in Washington, Columbia County is ranked #23 in terms of Multiracial residents as a share of the population.

Columbia County is more Multiracial than neighboring Garfield County (3.8% Multiracial), Walla Walla County (4.9% Multiracial), and Adams County (1.7% Multiracial). Columbia County is less Multiracial than neighboring Whitman County (6.1% Multiracial).

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