Mercer Island
A city in King County, Washington — population 25,912 as of 2020.
This Afternoon
71°F
Sunny10% precip
Tonight
57°F
Mostly Cloudy12% precip
Sunday
69°F
Partly Sunny14% precip
Sunday Night
55°F
Mostly Clear1% precip
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Mercer Island by the numbers
Population
25,912Population figure, 2020
Households & income
- Area
- 6.38 sq mi (16.53 km²), 6.52 sq mi water
- Median age
- 46.4
- Households
- 10,068
- Persons per household
- 2.5
- Median household income
- $219,069
- Median house value
- $2,000,001
Municipal office
- Office
- CITY CLERK
- Address
- 9611 SE 36TH ST, MERCER ISLAND, WA 98040