Demographics & People — SeaTac, Washington
Population Overview
| Population (Census) | 31,143 |
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| Estimated 2026 | ~35,600 |
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| Median Age | 36.8 |
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| Total Households | 11,772 |
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| Family Households | 7,046 |
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| Average Household Size | 2.57 |
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| Diversity Index | 0.7365 (highly diverse) |
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Race & Ethnicity
| White | 9,732 |
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| Black or African American | 7,566 |
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| Asian | 4,937 |
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| Hispanic or Latino | 7,100 |
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Heritage & Ancestry
| Group | Count |
|---|
| Other groups | 13,789 |
| Hispanic: Hispanic or Latino | 6,525 |
| Subsaharan African | 5,379 |
| Unclassified or not reported | 4,793 |
| Hispanic: Mexican | 3,987 |
| Ethiopian | 2,598 |
| German | 2,541 |
| Hispanic: Central American | 1,694 |
| Irish | 1,600 |
| Somali | 1,525 |
Language
| English Only | 14,444 |
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| Spanish | 5,152 |
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| Population 5+ | 29,286 |
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Veterans
| Veterans | 1,456 |
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| Population 18+ | 23,954 |
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Commuting
| Mean Commute Time | 25.4 minutes |
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| Work from Home | 11.5% |
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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 SeaTac, Washington.
