Johnson County, Kansas Demographics 2026

Name: Johnson County, Kansas Demographics
Creator: U.S. Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Johnson County, Kansas has a population of 620,631, the 1st most populous county in Kansas. The median household income is $109,208 and the median home value is $391,200. The poverty rate is 5.4%.

Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes

Johnson County Quick Facts

Population 620,631

Median Household Income $109,208

Median Home Value $391,200

Poverty Rate 5.4%

Unemployment Rate 3.2%

Median Age 38.6 years

Homeownership Rate 68.5%

Affordability Ratio 3.6x

Bachelor's Degree+ 57.6%

High School Graduation 96.6%

Cities/Places 20

Population 620,631 1st of 105

Median Income $109,208 47% higher than state

Poverty Rate 5.4%

Unemployment 3.2%

How Johnson County Changed

Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.

Metric	2019–2023	2020–2024	Change
Population	614,764	620,631	+1.0%
Median household income	$107,261	$109,208	+1.8%
Median home value	$366,000	$391,200	+6.9%

Median Household Income

Johnson

$109,208

$74,275

National

$80,734

Median Home Value

Johnson

$391,200

$217,200

National

$332,700

Economy & Housing

Household Income Distribution

Under $25K 6.9%

$25K-$50K 12.2%

$50K-$100K 26.5%

$100K+ 54.4%

Detailed income brackets

Under $10K

2.6%

$10K-$15K

1.5%

$15K-$20K

1.2%

$20K-$25K

1.7%

$25K-$30K

2.5%

$30K-$35K

2.2%

$35K-$40K

2.3%

$40K-$45K

2.5%

$45K-$50K

2.6%

$50K-$60K

5.6%

$60K-$75K

8.4%

$75K-$100K

12.5%

$100K-$125K

11.3%

$125K-$150K

8.8%

$150K-$200K

13.5%

$200K+

20.7%

Employment

3.2% Unemployment Rate State: 3.9%|National: 5.2%

71.7% Labor Force Participation

Housing Overview

Owner 68.5%

Renter 31.5%

Affordability Index Affordable

3.6x home value to income ratio

Median gross rent $1,434/mo 15.8% of median household income annually

People & Demographics

Age Distribution

Under 18

23.5%

18-34

21.5%

35-54

27.0%

55-74

21.6%

75+

6.4%

Race & Ethnicity

Diversity Index

Moderate Diversity

Moderate diversity with one or two groups making up the majority.

State average: 45 | National average: 61

Education

Educational Attainment (Adults 25+)

Cities & Places in Johnson County

City	Population	Median Income	Poverty	Home Value
Overland Park	200,306	$104,834	5.6%	$413,600
Olathe	145,057	$114,009	5.6%	$364,700
Shawnee	68,542	$109,940	5.3%	$359,700
Lenexa	58,384	$103,239	5.4%	$394,900
Leawood	33,809	$185,625	3.1%	$658,800
Gardner	24,526	$96,818	6.3%	$306,200
Prairie Village	22,874	$113,530	5.7%	$435,700
Merriam	11,085	$73,600	6.0%	$263,300
Mission	9,915	$75,534	9.7%	$289,100
Spring Hill	9,120	$112,428	7.7%	$357,800
Bonner Springs	7,839	$83,218	12.4%	$247,200
Roeland Park	6,763	$88,774	9.2%	$276,200
De Soto	6,414	$104,000	6.1%	$422,400
Fairway	4,159	$152,574	3.1%	$618,000
Mission Hills	3,548	$250,000+	1.2%	$1,237,800
Westwood	2,093	$118,250	1.9%	$404,200
Edgerton	1,924	$84,838	4.3%	$210,600
Lake Quivira	940	$177,917	3.8%	$817,900
Westwood Hills	469	$190,625	0.9%	$564,000
Mission Woods	184	$163,750	0.5%	$750,000

Explore Kansas Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Population Overview

Johnson County is located in Kansas with a total population of 620,631. It is the 1st most populous county out of 105 in Kansas. The county encompasses 20 Census-designated places.

Age Demographics

The median age in Johnson County is 38.6 years. This is 3% higher than the state median of 37.4 years.

Economy, Income & Housing

The median household income in Johnson County is $109,208. This is 47% higher than the state median of $74,275. It is also 35% higher than the national median of $80,734. The poverty rate stands at 5.4%. This is 52% lower than the state poverty rate of 11.3%. The unemployment rate is 3.2%. This is 18% lower than the state rate of 3.9%. The median home value is $391,200. Housing costs are 80% higher than the state median of $217,200. The home-value-to-income ratio is 3.6x. 68.5% of occupied housing units are owner-occupied. This homeownership rate is 2% higher than the state average of 67.2%.

Race & Ethnicity

The largest racial or ethnic group in Johnson County is White (non-Hispanic), making up 76.1% of the population. Hispanic or Latino residents account for 9.3%. The Asian population is significantly higher than the state average (5.2% vs 2.9%).

Education

57.6% of residents aged 25 and older hold a bachelor's degree or higher. This places Johnson County in the top 10% of all counties in the state for educational attainment. This is 62% higher than the state rate of 35.6%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 96.6%. Notably, 22.9% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All figures for Johnson County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Kansas and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.

Frequently Asked Questions

What is the population of Johnson County, Kansas?

Johnson County has a population of 620,631, making it the 1st most populous county in Kansas.

What is the median income in Johnson County?

The median household income in Johnson County is $109,208 with a poverty rate of 5.4%.

How many cities are in Johnson County, Kansas?

Johnson County contains 20 Census-designated places.