Census Dots

Johnson County Demographics

A map of Johnson County's Population by Race

Race
PopulationPercent
White
460,39975.5%
Hispanic
54,3898.9%
Asian
32,8565.4%
Multiracial
29,7934.9%
Black
28,0924.6%
Native American/Other
4,3340.7%

Johnson County, Kansas had a population of 609,863 in 2020. It was 75.5% White, 4.6% Black, 5.4% Asian, 8.9% Hispanic, 0.7% Native American/Other, and 4.9% 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 most populous county of the 105 counties in Kansas.

Johnson County's White Population

460,399 residents of Johnson County identify as White, or 75.5%. This makes the White share of the population of Johnson County roughly similar to the White share of the population of Kansas (72.2% White). Of the 105 counties in Kansas, Johnson County is ranked #85 in terms of White residents as a share of the population.

Johnson County is more White than neighboring Wyandotte County (37.3% White), and Jackson County (58.5% White). Johnson County is less White than neighboring Miami County (89.1% White), Leavenworth County (76.3% White), and Douglas County (76% White).

Johnson County's Black Population

28,092 residents of Johnson County identify as Black, or 4.6%. This makes the Black share of the population of Johnson County roughly similar to the Black share of the population of Kansas (5.6% Black). Of the 105 counties in Kansas, Johnson County is ranked #9 in terms of Black residents as a share of the population.

Johnson County is more Black than neighboring Miami County (1.3% Black), and Douglas County (4.3% Black). Johnson County is less Black than neighboring Wyandotte County (20.1% Black), Leavenworth County (8.1% Black), and Jackson County (21.8% Black).

Johnson County's Asian Population

32,856 residents of Johnson County identify as Asian, or 5.4%. This makes the Asian share of the population of Johnson County roughly similar to the Asian share of the population of Kansas (2.9% Asian). Of the 105 counties in Kansas, Johnson County is ranked #1 in terms of Asian residents as a share of the population.

Johnson County is more Asian than neighboring Wyandotte County (4.5% Asian), Miami County (0.5% Asian), Leavenworth County (1.3% Asian), Douglas County (3.9% Asian), and Jackson County (2.1% Asian).

Johnson County's Hispanic Population

54,389 residents of Johnson County identify as Hispanic, or 8.9%. This makes the Hispanic share of the population of Johnson County roughly similar to the Hispanic share of the population of Kansas (13% Hispanic). Of the 105 counties in Kansas, Johnson County is ranked #35 in terms of Hispanic residents as a share of the population.

Johnson County is more Hispanic than neighboring Miami County (3.5% Hispanic), Leavenworth County (6.8% Hispanic), and Douglas County (7% Hispanic). Johnson County is less Hispanic than neighboring Wyandotte County (33% Hispanic), and Jackson County (10.8% Hispanic).

Johnson County's Native American/Other Population

4,334 residents of Johnson 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 Johnson County roughly similar to the Native American/Other share of the population of Kansas (1.2% Native American/Other). Of the 105 counties in Kansas, Johnson County is ranked #58 in terms of Native American/Other residents as a share of the population.

Johnson County is less Native American/Other than neighboring Wyandotte County (1% Native American/Other), Leavenworth County (1.2% Native American/Other), Douglas County (2.7% Native American/Other), and Jackson County (1% Native American/Other).

Johnson County's Multiracial Population

29,793 residents of Johnson County identify as Multiracial, or 4.9%. This makes the Multiracial share of the population of Johnson County roughly similar to the Multiracial share of the population of Kansas (5.1% Multiracial). Of the 105 counties in Kansas, Johnson County is ranked #29 in terms of Multiracial residents as a share of the population.

Johnson County is more Multiracial than neighboring Wyandotte County (4.2% Multiracial). Johnson County is less Multiracial than neighboring Leavenworth County (6.2% Multiracial), Douglas County (6.1% Multiracial), and Jackson County (5.7% Multiracial).

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