Mercer Island
City in King County, Washington

Mercer Island is a city in King County, Washington, with 25,748 residents (2020 Census). The nearest town is Beaux Arts Village, 2.0 miles NE.
- 25,748residents (2020 Census)
- 6.4 sq miland area · 16.5 km²
- 4,034 / sq mipopulation density
- 98040main ZIP code (2 in total)
Mercer Island weather: 7-day forecast
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Source: National Weather Service (NOAA).
Live webcams in Mercer Island
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Living in Mercer Island
- Median household income
- $219,069
- Median home value
- $2,000,001
- Median rent
- $2,502/mo
- Median age
- 46.4
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Map of Mercer Island
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Mercer Island Street View
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Open in Google Maps ›Mercer Island, WA population
Mercer Island had 25,748 residents in the 2020 Census.
| 2020 Census | 25,748 |
|---|---|
| Density | 4,034 per sq mi (1,558 per km²) |
Source: U.S. Census Bureau, Decennial Census.
Mercer Island at a glance
| State | Washington (WA) |
|---|---|
| County | King County |
| Type | City |
| Population | 25,748 (2020) |
| Land area | 6.38 sq mi (16.5 km²) |
| Water area | 6.52 sq mi (16.88 km²) |
| Coordinates | 47.5640° N, 122.2312° W |
| ZIP codes | 98040, 98118 |
| Census code (GEOID) | 5345005 |
Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.
Towns near Mercer Island
- Beaux Arts Village2.0 mi NE
- Newcastle3.6 mi SE
- Bellevue4.1 mi NE
- Medina4.3 mi N
- Clyde Hill4.6 mi N
- Bryn Mawr-Skyway4.8 mi S
- Boulevard Park5.2 mi SW
- Hunts Point5.5 mi N
- Yarrow Point5.6 mi N
- Renton6.1 mi S
- Tukwila6.4 mi S
- White Center6.6 mi SW
Straight-line distance between town centers.
Frequently asked questions about Mercer Island
What county is Mercer Island in?
Mercer Island is in King County, Washington.
What is the population of Mercer Island, WA?
25,748 people lived in Mercer Island at the 2020 Census.
What is the ZIP code of Mercer Island, WA?
The main ZIP code is 98040. Other ZIP codes: 98118.
What towns are near Mercer Island?
Beaux Arts Village (2.0 mi), Newcastle (3.6 mi), Bellevue (4.1 mi), Medina (4.3 mi), Clyde Hill (4.6 mi).
Last updated: