Columbia County Demographics

A map of Columbia County's Population by Race

Columbia County, Wisconsin had a population of 58,490 in 2020. It was 90.7% White, 1.5% Black, 0.6% Asian, 3.7% Hispanic, 0.7% Native American/Other, and 2.9% 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 26th most populous county of the 72 counties in Wisconsin.

Columbia County's White Population

53,037 residents of Columbia County identify as White, or 90.7%. This makes the White share of the population of Columbia County larger than the White share of the population of Wisconsin (78.6% White). Of the 72 counties in Wisconsin, Columbia County is ranked #31 in terms of White residents as a share of the population.

Columbia County is more White than neighboring Dane County (76% White), Sauk County (88% White), and Dodge County (87.1% White). Columbia County is less White than neighboring Marquette County (92.8% White).

Columbia County's Black Population

866 residents of Columbia County identify as Black, or 1.5%. This makes the Black share of the population of Columbia County roughly similar to the Black share of the population of Wisconsin (6.2% Black). Of the 72 counties in Wisconsin, Columbia County is ranked #22 in terms of Black residents as a share of the population.

Columbia County is more Black than neighboring Marquette County (0.3% Black), Green Lake County (0.6% Black), and Sauk County (0.9% Black). Columbia County is less Black than neighboring Dane County (5.3% Black), and Dodge County (3% Black).

Columbia County's Asian Population

376 residents of Columbia County identify as Asian, or 0.6%. This makes the Asian share of the population of Columbia County roughly similar to the Asian share of the population of Wisconsin (3% Asian). Of the 72 counties in Wisconsin, Columbia County is ranked #32 in terms of Asian residents as a share of the population.

Columbia County is more Asian than neighboring Marquette County (0.3% Asian), and Green Lake County (0.5% Asian). Columbia County is less Asian than neighboring Dane County (6.3% Asian).

Columbia County's Hispanic Population

2,139 residents of Columbia County identify as Hispanic, or 3.7%. This makes the Hispanic share of the population of Columbia County roughly similar to the Hispanic share of the population of Wisconsin (7.6% Hispanic). Of the 72 counties in Wisconsin, Columbia County is ranked #29 in terms of Hispanic residents as a share of the population.

Columbia County is more Hispanic than neighboring Marquette County (3.1% Hispanic). Columbia County is less Hispanic than neighboring Dane County (7.5% Hispanic), Green Lake County (5.1% Hispanic), Sauk County (6.2% Hispanic), and Dodge County (6.1% Hispanic).

Columbia County's Native American/Other Population

403 residents of Columbia 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 Columbia County roughly similar to the Native American/Other share of the population of Wisconsin (1.2% Native American/Other). Of the 72 counties in Wisconsin, Columbia County is ranked #39 in terms of Native American/Other residents as a share of the population.

Columbia County is more Native American/Other than neighboring Dane County (0.6% Native American/Other), and Green Lake County (0.5% Native American/Other). Columbia County is less Native American/Other than neighboring Sauk County (1.4% Native American/Other).

Columbia County's Multiracial Population

1,669 residents of Columbia County identify as Multiracial, or 2.9%. This makes the Multiracial share of the population of Columbia County roughly similar to the Multiracial share of the population of Wisconsin (3.5% Multiracial). Of the 72 counties in Wisconsin, Columbia County is ranked #47 in terms of Multiracial residents as a share of the population.

Columbia County is more Multiracial than neighboring Marquette County (2.7% Multiracial), Green Lake County (2.6% Multiracial), and Dodge County (2.5% Multiracial). Columbia County is less Multiracial than neighboring Dane County (4.3% Multiracial), and Sauk County (3% Multiracial).

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