Sammamish city, Washington
Official LSAD Designation: Sammamish city • Census GEOID: 5361115
• King County
Demographics & Population Profile
Population and demographics for Sammamish city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 66,110 | — | 2025 | Census |
| Median Age | 39.9 yrs | ±0.6 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 22,144 | ±430 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).