Johnson County, Kansas Demographics 2026
Johnson County, Kansas has a population of 614,764, the 1st most populous county in Kansas. The median household income is $107,261 and the median home value is $366,000. The poverty rate is 5.3%.
Johnson County Quick Facts
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
A less diverse community where one racial or ethnic group represents a large majority.
State average: 44 | National average: 60
Education
Educational Attainment (Adults 25+)
Cities & Places in Johnson County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Overland Park city | 197,199 | $103,838 | 4.9% | $384,400 |
| Olathe city | 143,720 | $112,232 | 5.6% | $340,600 |
| Shawnee city | 68,175 | $106,312 | 5.4% | $332,900 |
| Lenexa city | 57,986 | $102,344 | 5.8% | $368,800 |
| Leawood city | 33,844 | $184,976 | 2.5% | $620,400 |
| Gardner city | 24,020 | $92,579 | 7.1% | $276,000 |
| Prairie Village city | 22,937 | $107,664 | 5.8% | $402,600 |
| Merriam city | 11,036 | $71,665 | 8.2% | $242,400 |
| Mission city | 9,928 | $74,396 | 10.6% | $268,500 |
| Roeland Park city | 6,800 | $89,385 | 11.5% | $262,700 |
| Fairway city | 4,177 | $159,821 | 3.8% | $626,600 |
| Mission Hills city | 3,556 | $250,001 | 1.0% | $1,183,200 |
| Westwood city | 1,851 | $102,500 | 2.3% | $384,500 |
| Edgerton city | 1,787 | $81,858 | 3.7% | $196,700 |
| Westwood Hills city | 484 | $196,250 | 0.4% | $548,900 |
| Mission Woods city | 182 | $196,250 | 0.5% | $741,700 |
| Park city | 79 | $93,750 | 12.7% | $77,500 |
Explore Kansas Rankings
Population Overview
Johnson County is located in Kansas with a total population of 614,764. It is the 1st most populous county out of 105 in Kansas. The county encompasses 17 Census-designated places.
Age Demographics
The median age in Johnson County is 38.3 years. This is 3% higher than the state median of 37.2 years.
Economy, Income & Housing
The median household income in Johnson County is $107,261. This is 48% higher than the state median of $72,639. Compared to the national median of $78,538, household income here is 37% higher. The poverty rate stands at 5.3%. This is 54% lower than the state poverty rate of 11.5%. The unemployment rate is 3.2%. This is 19% lower than the state rate of 3.9%. The median home value is $366,000. Housing costs are 80% higher than the state median of $203,400. The home-value-to-income ratio is 3.4x. 68.6% of occupied housing units are owner-occupied. This homeownership rate is 3% higher than the state average of 66.9%.
Race & Ethnicity
The largest racial or ethnic group in Johnson County is White (non-Hispanic), making up 76.9% of the population. Hispanic or Latino residents account for 9.1%. The Asian population is significantly higher than the state average (5.1% vs 2.9%).
Education
56.9% of residents aged 25 and older hold a bachelor's degree or higher. This places Johnson County in the top 10% of all cities in the state for educational attainment. This is 62% higher than the state rate of 35.2%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 96.5%. Notably, 22.4% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Frequently Asked Questions
What is the population of Johnson County, Kansas?
Johnson County has a population of 614,764, 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 $107,261 with a poverty rate of 5.3%.
How many cities are in Johnson County, Kansas?
Johnson County contains 17 Census-designated places.