Johnson County Demographics
A map of Johnson County's Population by Race
Race | Population | Percent |
|---|---|---|
White | 114,491 | 74.9% |
Black | 12,643 | 8.3% |
Hispanic | 10,198 | 6.7% |
Asian | 8,555 | 5.6% |
Multiracial | 6,199 | 4.1% |
Native American/Other | 768 | 0.5% |
Johnson County, Iowa had a population of 152,854 in 2020. It was 74.9% White, 8.3% Black, 5.6% Asian, 6.7% Hispanic, 0.5% Native American/Other, and 4.1% Multiracial. This map presents the population of Johnson County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.
Johnson County is the 4th most populous county of the 99 counties in Iowa.
Johnson County's White Population
114,491 residents of Johnson County identify as White, or 74.9%. This makes the White share of the population of Johnson County slightly less than the White share of the population of Iowa (82.7% White). Of the 99 counties in Iowa, Johnson County is ranked #94 in terms of White residents as a share of the population.
Johnson County is less White than neighboring Washington County (88.4% White), Linn County (81.6% White), Cedar County (93.7% White), Iowa County (92.4% White), and Muscatine County (75.5% White).
Johnson County's Black Population
12,643 residents of Johnson County identify as Black, or 8.3%. This makes the Black share of the population of Johnson County roughly similar to the Black share of the population of Iowa (4.1% Black). Of the 99 counties in Iowa, Johnson County is ranked #2 in terms of Black residents as a share of the population.
Johnson County is more Black than neighboring Washington County (0.8% Black), Linn County (7% Black), Cedar County (0.4% Black), Iowa County (0.7% Black), and Muscatine County (2.5% Black).
Johnson County's Asian Population
8,555 residents of Johnson County identify as Asian, or 5.6%. This makes the Asian share of the population of Johnson County roughly similar to the Asian share of the population of Iowa (2.4% Asian). Of the 99 counties in Iowa, Johnson County is ranked #2 in terms of Asian residents as a share of the population.
Johnson County is more Asian than neighboring Washington County (0.5% Asian), Linn County (2.3% Asian), Cedar County (0.3% Asian), Iowa County (0.5% Asian), and Muscatine County (0.9% Asian).
Johnson County's Hispanic Population
10,198 residents of Johnson County identify as Hispanic, or 6.7%. This makes the Hispanic share of the population of Johnson County roughly similar to the Hispanic share of the population of Iowa (6.8% Hispanic). Of the 99 counties in Iowa, Johnson County is ranked #23 in terms of Hispanic residents as a share of the population.
Johnson County is more Hispanic than neighboring Linn County (3.9% Hispanic), Cedar County (2.5% Hispanic), and Iowa County (3% Hispanic). Johnson County is less Hispanic than neighboring Washington County (7.1% Hispanic), and Muscatine County (18% Hispanic).
Johnson County's Native American/Other Population
768 residents of Johnson 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 Johnson 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, Johnson County is ranked #43 in terms of Native American/Other residents as a share of the population.
Johnson County is more Native American/Other than neighboring Muscatine County (0.4% Native American/Other). Johnson County is less Native American/Other than neighboring Linn County (0.7% Native American/Other).
Johnson County's Multiracial Population
6,199 residents of Johnson County identify as Multiracial, or 4.1%. This makes the Multiracial share of the population of Johnson County roughly similar to the Multiracial share of the population of Iowa (3.4% Multiracial). Of the 99 counties in Iowa, Johnson County is ranked #6 in terms of Multiracial residents as a share of the population.
Johnson County is more Multiracial than neighboring Washington County (2.7% Multiracial), Cedar County (2.6% Multiracial), Iowa County (2.9% Multiracial), and Muscatine County (2.7% Multiracial). Johnson County is less Multiracial than neighboring Linn County (4.5% Multiracial).
Source: 2020 Census State Redistricting Data and Census TIGER/Line Shapefiles.