Population By Race and Ethnicity in Johnson County, IA in 2018

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2018, the 151,003 population of Johnson County, Iowa comprised of 8,698 people who identified as Hispanic (5.76%), and 142,305 people who identified as Non-Hispanic (94.24%).

Race: The White Alone population was the largest racial group in Johnson County, Iowa with a population of 125,084 (82.84%); Black or African American Alone population was the second largest racial group with a population of 11,630 (7.7%); and Asian Alone was the third largest racial group with a population of 9,907 (6.56%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Johnson County, Iowa in 2018, with a population of 117,542 (77.84%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 11,223 (7.43%); and the third largest ethnic group was Asian Alone - Non Hispanic with a population of 9,789 (6.48%).

The charts and tables below shows the population and percentage of each racial and ethnicity group in Johnson, Iowa.

You can find similar information for other Iowa counties, and for Iowa.

Data Source: US Census Bureau (Vintage).

See this for other years:

Hispanics and Non Hispanics in Johnson County, IA in 2018

Total Population:151,003

Non Hispanic (94.24%)

Hispanic (5.76%)

Race in Johnson County, IA in 2018

Total Population:151,003

White Alone (82.84%)

Black or African American Alone (7.7%)

Asian Alone (6.56%)

Two or more races (2.5%)

American Indian and Alaska Native Alone (0.36%)

Native Hawaiian And Pacific Islander Alone (0.05%)

Ethnicity in Johnson County, IA in 2018

Total Population:151,003

Non-Hispanic White Alone (77.84%)

Non-Hispanic Black or African American Alone (7.43%)

Non-Hispanic Asian Alone (6.48%)

Hispanic White Alone (5%)

Non-Hispanic Two or more races (2.25%)

All Other Ethnicities (1.00%)

Population By Race in Johnson , IA in 2018

Race	Population	Percentage
White Alone	125,084	82.84%
Black or African American Alone	11,630	7.7%
Asian Alone	9,907	6.56%
Two Or More Races	3,769	2.5%
American Indian and Alaska Native Alone	539	0.36%
Native Hawaiian And Pacific Islander Alone	74	0.05%

Population By Ethnicity in Johnson , IA in 2018

Ethnicity	Population	Percentage
White Alone - Non Hispanic	117,542	77.84%
Black or African American Alone - Non Hispanic	11,223	7.43%
Asian Alone - Non Hispanic	9,789	6.48%
White Alone - Hispanic	7,542	5%
Two Or More Races - Non Hispanic	3,399	2.25%
Black or African American Alone - Hispanic	407	0.27%
Two Or More Races - Hispanic	370	0.25%
American Indian and Alaska Native Alone - Non Hispanic	295	0.2%
American Indian and Alaska Native Alone - Hispanic	244	0.16%
Asian Alone - Hispanic	118	0.08%
Native Hawaiian And Pacific Islander Alone - Non Hispanic	57	0.04%
Native Hawaiian And Pacific Islander Alone - Hispanic	17	0.01%