Census Dots

Washington County Demographics

A map of Washington County's Population by Race

Race
PopulationPercent
White
19,95888.4%
Hispanic
1,6127.1%
Multiracial
6012.7%
Black
1770.8%
Asian
1130.5%
Native American/Other
1040.5%

Washington County, Iowa had a population of 22,565 in 2020. It was 88.4% White, 0.8% Black, 0.5% Asian, 7.1% Hispanic, 0.5% Native American/Other, and 2.7% Multiracial. This map presents the population of Washington County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Washington County is the 27th most populous county of the 99 counties in Iowa.

Washington County's White Population

19,958 residents of Washington County identify as White, or 88.4%. This makes the White share of the population of Washington County slightly larger than the White share of the population of Iowa (82.7% White). Of the 99 counties in Iowa, Washington County is ranked #69 in terms of White residents as a share of the population.

Washington County is more White than neighboring Johnson County (74.9% White), Jefferson County (85.7% White), Henry County (86.1% White), and Louisa County (78.3% White). Washington County is less White than neighboring Keokuk County (94.4% White).

Washington County's Black Population

177 residents of Washington County identify as Black, or 0.8%. This makes the Black share of the population of Washington County roughly similar to the Black share of the population of Iowa (4.1% Black). Of the 99 counties in Iowa, Washington County is ranked #47 in terms of Black residents as a share of the population.

Washington County is more Black than neighboring Keokuk County (0.5% Black), and Louisa County (0.7% Black). Washington County is less Black than neighboring Johnson County (8.3% Black), Jefferson County (2.6% Black), and Henry County (2.4% Black).

Washington County's Asian Population

113 residents of Washington County identify as Asian, or 0.5%. This makes the Asian share of the population of Washington County roughly similar to the Asian share of the population of Iowa (2.4% Asian). Of the 99 counties in Iowa, Washington County is ranked #46 in terms of Asian residents as a share of the population.

Washington County is more Asian than neighboring Keokuk County (0.2% Asian). Washington County is less Asian than neighboring Johnson County (5.6% Asian), Jefferson County (3.2% Asian), Henry County (2.2% Asian), and Louisa County (2.4% Asian).

Washington County's Hispanic Population

1,612 residents of Washington County identify as Hispanic, or 7.1%. This makes the Hispanic share of the population of Washington County roughly similar to the Hispanic share of the population of Iowa (6.8% Hispanic). Of the 99 counties in Iowa, Washington County is ranked #19 in terms of Hispanic residents as a share of the population.

Washington County is more Hispanic than neighboring Johnson County (6.7% Hispanic), Jefferson County (3.9% Hispanic), Henry County (5.3% Hispanic), and Keokuk County (2.1% Hispanic). Washington County is less Hispanic than neighboring Louisa County (15.9% Hispanic).

Washington County's Native American/Other Population

104 residents of Washington County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 0.5%. This makes the Native American/Other share of the population of Washington County roughly similar to the Native American/Other share of the population of Iowa (0.7% Native American/Other). Of the 99 counties in Iowa, Washington County is ranked #51 in terms of Native American/Other residents as a share of the population.

Washington County is more Native American/Other than neighboring Keokuk County (0.1% Native American/Other), and Louisa County (0.2% Native American/Other). Washington County is less Native American/Other than neighboring Jefferson County (0.9% Native American/Other), and Henry County (0.7% Native American/Other).

Washington County's Multiracial Population

601 residents of Washington County identify as Multiracial, or 2.7%. This makes the Multiracial share of the population of Washington County roughly similar to the Multiracial share of the population of Iowa (3.4% Multiracial). Of the 99 counties in Iowa, Washington County is ranked #41 in terms of Multiracial residents as a share of the population.

Washington County is more Multiracial than neighboring Louisa County (2.4% Multiracial). Washington County is less Multiracial than neighboring Johnson County (4.1% Multiracial), Jefferson County (3.7% Multiracial), and Henry County (3.2% Multiracial).

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