Olathe, Kansas Demographics & Population 2026
During the 2020–2024 ACS period, Olathe, Kansas had a total population of 145,057, the 4th largest city in Kansas, with a median household income of $114,009, which is 53% higher than the state average. The poverty rate is 5.6%.
Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes
Key Takeaways
- Olathe is the 4th largest city in Kansas with a population of 145,057.
- Household income is 53% above the state average — one of the wealthiest communities in Kansas.
- 50.5% of adults hold a bachelor's degree or higher — top 10% in Kansas.
Olathe Quick Facts
How Olathe 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 | 143,720 | 145,057 | +0.9% |
| Median household income | $112,232 | $114,009 | +1.6% |
| Median home value | $340,600 | $364,700 | +7.1% |
How Olathe Compares
Median Household Income
Median Home Value
Economy & Housing
Household Income Distribution
Detailed income brackets
Employment
Housing Overview
People & Demographics
Age Distribution
Race & Ethnicity
Diversity Index
Moderate diversity with one or two groups making up the majority.
State average: 45 | National average: 61
Education
Educational Attainment (Adults 25+)
Olathe Rankings in Kansas
Explore Kansas Rankings
Other Cities in Johnson County
| City | Population | Median Income | Poverty | Home Value |
|---|---|---|---|---|
| Overland Park | 200,306 | $104,834 | 5.6% | $413,600 |
| 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 |
Cities Similar to Olathe
These cities in the same state have comparable population and economic profiles.
| City | Population | Median Income | Home Value | Bachelor's+ | Poverty |
|---|---|---|---|---|---|
| Overland Park | 200,306 | $104,834 | $413,600 | 63.7% | 5.6% |
| Kansas City | 155,135 | $62,401 | $167,400 | 20.8% | 16.0% |
| Topeka | 125,786 | $56,956 | $144,200 | 29.0% | 15.7% |
| Lawrence | 96,051 | $65,009 | $292,700 | 55.8% | 17.4% |
| Shawnee | 68,542 | $109,940 | $359,700 | 53.1% | 5.3% |
Population Overview
Olathe is a major urban center located in Kansas, within Johnson County. The total population is 145,057. It ranks as the 4th most populous out of 721 Census-designated places in Kansas.
Age Demographics
The median age in Olathe is 37.2 years. This is about the same as the state median of 37.4 years.
Economy, Income & Housing
The median household income in Olathe is $114,009. This is 53% higher than the state median of $74,275. It is also 41% higher than the national median of $80,734. The poverty rate stands at 5.6%. This is 50% lower than the state poverty rate of 11.3%. The unemployment rate is 2.7%. This is 32% lower than the state rate of 3.9%. The median home value is $364,700. Housing costs are 68% higher than the state median of $217,200. The home-value-to-income ratio is 3.2x. 74.8% of occupied housing units are owner-occupied. This homeownership rate is 11% higher than the state average of 67.2%.
Race & Ethnicity
The largest racial or ethnic group in Olathe is White (non-Hispanic), making up 72.4% of the population. Hispanic or Latino residents account for 12.6%.
Education
50.5% of residents aged 25 and older hold a bachelor's degree or higher. This places Olathe in the top 10% of all cities in the state for educational attainment. This is 42% 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 94.7%. Notably, 19.1% of adults hold a graduate or professional degree, indicating a highly educated workforce.
Data Sources & Methodology
All demographic data for Olathe, Kansas is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Kansas state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 721 Census-designated places in Kansas. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.
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Frequently Asked Questions
What is the population of Olathe, Kansas?
Olathe, Kansas has a population of 145,057 according to the most recent U.S. Census ACS 5-Year Estimates.
What is the median household income in Olathe, KS?
The median household income in Olathe is $114,009, which is 41% higher than the national median of $80,734.
What is the poverty rate in Olathe, KS?
The poverty rate in Olathe is 5.6%. This means approximately 8,016 residents live below the federal poverty line.
What is the racial makeup of Olathe, Kansas?
Olathe's population is 72.4% White, 5.3% Black, 12.6% Hispanic/Latino, and 4.3% Asian.
What is the median home value in Olathe, KS?
The median home value in Olathe is $364,700. The home-value-to-income ratio is 3.2x.
How educated is Olathe, Kansas?
50.5% of adults (25+) in Olathe hold a bachelor's degree or higher, and 19.1% hold a graduate or professional degree.