Sammamish city, Washington
Official LSAD Designation: Sammamish city • Census GEOID: 5361115
• King County
Sammamish city is an incorporated city in King County, Washington. According to official records from the Census (2025), Sammamish city had an estimated population of 66,110 residents. Official Census Bureau geographic records classify this community under LSAD designation Sammamish city (GEOID 5361115).
Local Government Administration U.S. Census Bureau GMAF
City Of Sammamish
Municipal
Official Title:
Deputy Finance Director
Address:
801 228TH AVE SE, SAMMAMISH WA 98075-9509
County Of King
County
Official Title:
Demographer
Address:
401 5TH AVE, STE 800, SEATTLE WA 98104-2391
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 66,110 | 2025 |
| Median Household Income | $239,690 | 2020-2024 |
| Median Home Value | $1,407,300 | 2020-2024 |
| Land Area | 20.43 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).