Mercer Island

City in King County, Washington

Aerial view of Mercer Island, Washington
Aerial view: USDA NAIP · USGS The National Map (public domain)

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.

Mercer Island weather: 7-day forecast

Loading the National Weather Service forecast…

Hourly forecast & alerts ›

Source: National Weather Service (NOAA).

Live webcams in Mercer Island

All 24 webcams near Mercer Island ›

Webcams: Windy.com

Living in Mercer Island

Median household income
$219,069
Median home value
$2,000,001
Median rent
$2,502/mo
Median age
46.4
Cost of living and demographics of Mercer Island ›

Do you know Mercer Island? Tell us about it

Help other travelers: share what makes Mercer Island special. We review every message before publishing it.

Map of Mercer Island

Tap any street on the map to see it in Street View below. Map: © OpenStreetMap contributors.

Mercer Island Street View

Loading Street View…

Drag the image to look around and tap the arrows on the ground to move. If it says there is no imagery, tap a nearby street on the map above.

Open in Google Maps ›

Mercer Island, WA population

Mercer Island had 25,748 residents in the 2020 Census.

2020 Census25,748
Density4,034 per sq mi (1,558 per km²)

Source: U.S. Census Bureau, Decennial Census.

Mercer Island at a glance

StateWashington (WA)
CountyKing County
TypeCity
Population25,748 (2020)
Land area6.38 sq mi (16.5 km²)
Water area6.52 sq mi (16.88 km²)
Coordinates47.5640° N, 122.2312° W
ZIP codes98040, 98118
Census code (GEOID)5345005

Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.

Towns near Mercer Island

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: