SeaTac city, Washington
Official LSAD Designation: SeaTac city • Census GEOID: 5362288
• King County
Demographics & Population Profile
Population and demographics for SeaTac city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 34,578 | — | 2025 | Census |
| Median Age | 36.8 yrs | ±2.2 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 12,134 | ±731 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).