Olathe city, Kansas Demographics & Population 2026
As of 2026, Olathe city, Kansas has a total population of 143,720, the 4th largest city in Kansas, with a median household income of $112,232, which is 55% higher than the state average. The poverty rate is 5.6%.
Key Takeaways
- Olathe city is the 4th largest city in Kansas with a population of 143,720.
- Household income is 55% above the state average — one of the wealthiest communities in Kansas.
- 49.4% of adults hold a bachelor's degree or higher — top 10% in Kansas.
Olathe city Quick Facts
How Olathe city Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
Moderate diversity with one or two groups making up the majority.
State average: 44 | National average: 60
Education
Educational Attainment (Adults 25+)
Olathe city Rankings in Kansas
Explore Kansas Rankings
Other Cities in Johnson County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Overland Park city | 197,199 | $103,838 | 4.9% | $384,400 |
| 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 |
Cities Similar to Olathe city
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Overland Park city | 197,199 | $103,838 | $384,400 | 62.8% | 4.9% |
| Kansas City city | 154,776 | $59,183 | $147,100 | 20.2% | 17.9% |
| Topeka city | 126,103 | $55,902 | $130,600 | 29.1% | 15.6% |
| Lawrence city | 95,459 | $62,838 | $269,500 | 55.1% | 17.6% |
| Shawnee city | 68,175 | $106,312 | $332,900 | 52.4% | 5.4% |
Population Overview
Olathe city is a major urban center located in Kansas, within Johnson County. The total population is 143,720. It ranks as the 4th most populous out of 726 cities and towns in Kansas.
Age Demographics
The median age in Olathe city is 36.6 years. This is 2% lower than the state median of 37.2 years.
Economy, Income & Housing
The median household income in Olathe city is $112,232. This is 55% higher than the state median of $72,639. Compared to the national median of $78,538, household income here is 43% higher. The poverty rate stands at 5.6%. This is 51% lower than the state poverty rate of 11.5%. The unemployment rate is 2.8%. This is 28% lower than the state rate of 3.9%. The median home value is $340,600. Housing costs are 67% higher than the state median of $203,400. The home-value-to-income ratio is 3.0x. 73.7% of occupied housing units are owner-occupied. This homeownership rate is 10% higher than the state average of 66.9%.
Race & Ethnicity
The largest racial or ethnic group in Olathe city is White (non-Hispanic), making up 73.6% of the population. Hispanic or Latino residents account for 12.6%.
Education
49.4% of residents aged 25 and older hold a bachelor's degree or higher. This places Olathe city in the top 10% of all cities in the state for educational attainment. This is 41% 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 94.7%. Notably, 18.8% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Olathe city, Kansas is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against Kansas state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 726 Census-designated places in Kansas. For official data, visit data.census.gov.
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Frequently Asked Questions
What is the population of Olathe city, Kansas?
Olathe city, Kansas has a population of 143,720 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Olathe city, KS?
The median household income in Olathe city is $112,232, which is 43% higher the national median of $78,538.
What is the poverty rate in Olathe city, KS?
The poverty rate in Olathe city is 5.6%. This means approximately 7,935 residents live below the federal poverty line.
What is the racial makeup of Olathe city, Kansas?
Olathe city's population is 73.6% White, 4.7% Black, 12.6% Hispanic/Latino, and 4.2% Asian.
What is the median home value in Olathe city, KS?
The median home value in Olathe city is $340,600. The home-value-to-income ratio is 3.0x.
How educated is Olathe city, Kansas?
49.4% of adults (25+) in Olathe city hold a bachelor's degree or higher, and 18.8% hold a graduate or professional degree.