Seattle metropolitan area

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Seattle metropolitan area
Seattle-Tacoma-Bellevue, WA MSA
Aerial view of Lake Union looking towards downtown Seattle
Aerial view of Lake Union looking towards downtown Seattle
Map of Seattle metropolitan area
A map of the Seattle MSA, which is highlighted in teal (the CSA is in navy blue)
Coordinates: 47°44′N 122°19′W / 47.74°N 122.32°W / 47.74; -122.32
CountryUnited States
State Washington
Largest city Seattle (753,675)
Other cities - Tacoma (217,827)
 - Bellevue (148,164)
 - Kent (132,319)
 - Everett (111,475)
 - Renton (101,751)
 • Total5,872.35 sq mi (15,209.3 km2)
Highest elevation
14,411 ft (4,392 m)
Lowest elevation
0 ft (0 m)
 • Total3,979,845
 • Rank 15th in the U.S.
 • Density659/sq mi (250/km2)

The Seattle metropolitan area is an urban conglomeration in the U.S. state of Washington that comprises Seattle, its surrounding satellites and suburbs. It contains the three most populous counties in the state— King, Snohomish, and Pierce—and is considered part of the greater Puget Sound region. The United States Census Bureau defines the metropolitan area as the Seattle–Tacoma–Bellevue, WA Metropolitan Statistical Area. With an estimated population of 3,979,845 as of 2019, [1] it is the 15th largest Metropolitan Statistical Area (MSA) in the United States and home to over half of Washington's population.


Downtown Seattle seen from Bainbridge Island

As defined by the United States Census Bureau, the Seattle metropolitan area is made up of the following (see Fig. STB):

Based on commuting patterns, the adjacent metropolitan areas of Olympia, Bremerton, and Mount Vernon, along with a few smaller satellite urban areas, are grouped together in a wider labor market region known as the Seattle–Tacoma–Olympia Combined Statistical Area (CSA) (See Figure STO), commonly known as the Puget Sound region. The population of this wider region is 4,686,536—roughly two-thirds of Washington's population—as of 2017. [1] The Seattle CSA is the 14th largest CSA, and the 13th largest primary census statistical area in the country. The additional metropolitan and micropolitan areas included are:

Census statistics

Historical population
Census Pop.
2019 (est.)3,979,84515.7%
U.S. Decennial Census
2019 estimate

As of the 2010 census, there were 3,439,809 people, 1,357,475 households, and 845,966 families residing within the MSA. The racial makeup of the MSA were as follows: [2] [3]

In 2010 the median income for a household in the MSA was $63,088 and the median income for a family was $76,876. The per capita income was $32,401. [4]

Map of southeast Seattle Metro towns
County 2019 Estimate 2010 Census Change Area Density
King County 2,252,782 1,931,249 +16.65% 2,115.56 sq mi (5,479.3 km2) 1,035/sq mi (399/km2)
Pierce County 904,980 795,225 +13.80% 1,669.51 sq mi (4,324.0 km2) 525/sq mi (203/km2)
Snohomish County 822,083 713,335 +15.25% 2,087.27 sq mi (5,406.0 km2) 384/sq mi (148/km2)
Total 3,979,845 3,439,809 +15.70% 5,872.34 sq mi (15,209.3 km2) 659/sq mi (254/km2)


According to the Pew Research Center's 2014 U.S. Religious Landscape Study, the Seattle metropolitan area's religious affiliation is as follows: [5]

  • Christian: 52%
    • Protestant Christian: 34%
    • Catholic Christian: 15%
    • Other Christian: 3%
  • Non-Christian faiths: 10%
    • Buddhist: 2%
    • Hindu: 2%
    • Judaism: 1%
    • Islam: Less than 1%
    • Other faiths: 4%
  • Unaffiliated: 37%
  • Don't Know: 1%




Major airports

Major highways

Mass transit


  1. ^ a b Bureau, U.S. Census. "U.S. Census website". United States Census Bureau. Retrieved 2017-03-25.
  2. ^ Bureau, U.S. Census. "American FactFinder - Results". Archived from the original on 2019-05-21. Retrieved 2018-03-14.
  3. ^ Bureau, U.S. Census. "American FactFinder - Results". Archived from the original on 2018-12-29. Retrieved 2018-03-14.
  4. ^ Bureau, U.S. Census. "American FactFinder - Results". Archived from the original on 2016-02-13. Retrieved 2018-03-14.
  5. ^ "Religious Landscape Study". Pew Research Center's Religion & Public Life Project. Retrieved 2015-11-10.
  6. ^ Blethen, Ryan (March 4, 2019). "How the first day of commercial flights from Paine Field went". The Seattle Times. Retrieved March 8, 2019.