Olathe, Kansas Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Olathe, Kansas is 143,720 as of the 2023 American Community Survey, making it the 4th-largest city in Kansas. The median household income is $112,232, the median home value is $340,600, and the median age is 36.6.
The population has grown 18.0% since 2010 (126,269 → 149,035).
143,720
Population
2231
People / sq mi
$112,232
Median Income
$340,600
Median Home Value
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Olathe covers 64.4 sq mi of land at 2231 people per square mile.
About Olathe, KS
Olathe is distinguished by its share of foreign-born residents, 41.5% of the population. With 143,720 residents, Olathe is a city in Kansas. That makes it one of the ten largest cities in Kansas in the country, at #4 by population.
Households take in a median $112,232, comfortably above the US median of $78,538. Only 4.0% of residents live in poverty, below the national 12.4%. Homes carry a median value of $340,600, with typical rent around $1,314.
College attainment is above the local norm at 49.4%, above the national 35.0%. About 18.8% of workers primarily work from home, above the national 14.0%, and the average commute runs about 21 minutes each way.
The large foreign-born share is a defining thread in Olathe, shaping language, household composition, and the labor force behind the economic figures above.
Olathe city Population History (2010-2024)
The city of Olathe city had a population of 126,269 in 2010 and 149,035 in 2024, a 18.0% growth over 14 years. The peak was 149,035 in 2024. Average annual growth rate: 1.19%.
149,035
Population (2024)
126,269
Population (2010)
149,035
Peak (2024)
1.19%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 126,269 |
| 2011 | 128,325 |
| 2012 | 129,963 |
| 2013 | 131,798 |
| 2014 | 132,839 |
| 2015 | 134,298 |
| 2016 | 135,928 |
| 2017 | 137,526 |
| 2018 | 139,758 |
| 2019 | 140,545 |
| 2020 | 141,560 |
| 2021 | 142,958 |
| 2022 | 144,741 |
| 2023 | 147,145 |
| 2024 | 149,035 |
Race & Ethnicity
| White | 78.6% |
| Black or African American | 4.8% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.7% |
| Two or More Races | 0.0% |
Economy & Income
$112,232
Median Household Income
$48,655
Per Capita Income
4.0%
Poverty Rate
2.1%
Unemployment Rate
Housing
$340,600
Median Home Value
$1,314
Median Rent
73.7%
Owner-Occupied
Education
94.7%
High School+
49.4%
Bachelor's+
Commute
0.2%
Drive Alone
71.5%
Public Transit
18.8%
Work From Home
20.7 min
Avg Commute
Community Profile
41.5%
Foreign Born
84.4%
Non-English at Home
5.1%
Veterans
9.5%
With Disability
93.1%
Health Insurance
98.1%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 22.4% |
| Finance, Insurance & Real Estate | 15.4% |
| Manufacturing | 9.9% |
| Information | 9.8% |
| Education, Health Care & Social Services | 7.3% |
| Retail Trade | 5.3% |
| Construction | 5.3% |
| Arts, Entertainment & Food Services | 4.1% |
| Public Administration | 3.5% |
| Transportation & Warehousing | 2.9% |
| Agriculture & Mining | 0.6% |
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Common questions about Olathe, KS
Frequently Asked Questions
Olathe, Kansas has a population of 143,720 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 4th-largest city in Kansas.
The median household income in Olathe, Kansas is $112,232, with 4.0% of residents living below the federal poverty level.
The median home value in Olathe, Kansas is $340,600, with median monthly rent at $1,314 and a homeownership rate of 73.7%.
The median age in Olathe, Kansas is 36.6 years. The population is 50.0% male and 50.0% female.
The population has grown 18.0% since 2010 (126,269 → 149,035).
Where to stay in Olathe
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.