Mercer Island

city in King County, Washington State, USA

Key facts

Country: United States
State: Washington
County: King
Incorporated: July 5, 1960
Type: Council–manager
Mayor: Dave Rosembaum
City manager: Jessi Bond
Total: 12.90 sq mi (33.41 km )
Land: 6.38 sq mi (16.53 km )
Water: 6.52 sq mi (16.88 km )
Elevation: 75 ft (23 m)
Estimate 2024: 25,302
Density: 3,880/sq mi (1,497/km )

Article

Mercer Island is a city in King County, Washington, United States, located on an island of the same name in the southern portion of Lake Washington. Mercer Island is in the Seattle metropolitan area, connected to the mainland on both sides by bridges carrying Interstate 90 and Link light rail, with the city of Seattle to the west and the city of Bellevue to the east.

The population was 25,748 at the 2020 census. Mercer Island is one of the 100 richest ZIP codes in the US, according to the IRS figures for adjusted gross income.