Seattle Metro Area Counties
3 counties · 4.2 million people (2025) · 5,870 sq mi
The Seattle metro area (officially the Seattle-Tacoma-Bellevue, WA Metropolitan Statistical Area) has 3 counties in Washington, with 4,161,883 people in 2025. King County is the most populous.
The 3 counties of the Seattle metro area
Sorted by population.
| County | County seat | Population 2025 | Change since 2020 | Land area (sq mi) | Type |
|---|---|---|---|---|---|
| King County | Seattle | 2,344,939 | +3.3% | 2,116 | Central |
| Pierce County | Tacoma | 946,288 | +2.7% | 1,668 | Central |
| Snohomish County | Everett | 870,656 | +5.2% | 2,087 | Central |
The metro area is part of the larger Seattle-Tacoma, WA Combined Statistical Area.
Printable map
The PDF is a vector file for Letter paper; the PNG is 2400 pixels wide. Both are free to use with a credit to WhichCounty.
County maps of Washington
Other metro areas
- New York City Metro Area Counties 22 counties
- Los Angeles Metro Area Counties 2 counties
- Chicago Metro Area Counties 13 counties
- Dallas–Fort Worth Metro Area Counties 11 counties
- Houston Metro Area Counties 10 counties
- Atlanta Metro Area Counties 29 counties
- Washington, D.C. Metro Area Counties 23 counties
- Miami Metro Area Counties 3 counties
- Philadelphia Metro Area Counties 11 counties
- Phoenix Metro Area Counties 2 counties
- Boston Metro Area Counties 7 counties
- Inland Empire Metro Area Counties 2 counties
- San Francisco–Oakland Metro Area Counties 5 counties
- Detroit Metro Area Counties 6 counties
- Minneapolis–St. Paul Metro Area Counties 15 counties
- Tampa Bay Metro Area Counties 4 counties
- Denver Metro Area Counties 10 counties
- Orlando Metro Area Counties 4 counties
- Charlotte Metro Area Counties 11 counties
- Baltimore Metro Area Counties 7 counties
- St. Louis Metro Area Counties 15 counties
- San Antonio Metro Area Counties 8 counties
- Austin Metro Area Counties 5 counties
- Portland Metro Area Counties 7 counties
- Cleveland Metro Area Counties 6 counties
- San Francisco Bay Area Counties 9 counties
Sources
- Metro area definition: U.S. Office of Management and Budget, Core Based Statistical Areas, July 2023 delineation (published by the Census Bureau).
- Boundaries: U.S. Census Bureau 2025 cartographic boundary files. Population: Census Bureau estimates, Vintage 2025.