Demographics & People — Olathe, Kansas
Population Overview
| Population (Census) | 143,720 |
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| Estimated 2026 | ~148,200 |
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| Median Age | 37.2 |
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| Total Households | 51,985 |
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| Family Households | 38,152 |
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| Average Household Size | 2.73 |
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| Diversity Index | 0.3645 (somewhat diverse) |
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Race & Ethnicity
| White | 112,990 |
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| Black or African American | 6,968 |
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| Asian | 6,004 |
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| Hispanic or Latino | 18,036 |
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Heritage & Ancestry
| Group | Count |
|---|
| Other groups | 34,802 |
| German | 32,852 |
| Unclassified or not reported | 31,276 |
| English | 21,276 |
| Irish | 16,736 |
| Hispanic: Hispanic or Latino | 16,618 |
| Hispanic: Mexican | 12,730 |
| American | 6,504 |
| Italian | 3,865 |
| European | 3,775 |
Language
| English Only | 113,732 |
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| Spanish | 11,681 |
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| Population 5+ | 134,750 |
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Veterans
| Veterans | 5,529 |
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| Population 18+ | 103,700 |
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Commuting
| Mean Commute Time | 20.6 minutes |
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| Work from Home | 20.9% |
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| Commuter Profile | N/A |
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Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Olathe, Kansas.
