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WA area data

Mercer Island, WA

Mercer Island, WA.

Population: 25,307 (Census ACS)

The typical home value in Mercer Island, WA is $2.26M — down 0.8% over the past year. Homes sell for a median $2.31M after a median 7 days on market. Typical rent runs $2,827/month. 6 schools serve the area (NCES). FEMA's National Risk Index rates the county's overall natural-hazard risk Very High, with avalanche, earthquake, inland flooding the top-rated hazards. Cost of living is 7.0% above the US average (BEA, metro/state-level).

Backed by 25+ public sourcesFEMA · U.S. Census · NOAA · Dept. of Education · EPA · and more

$2.26M

Typical home value

-0.8%

1-year change

7

Median days on market

Very High

Hazard risk (county)

Home values & appreciation

Typical home value
$2.26M
1-year appreciation
-0.8%
3-year appreciation
+6.8%
5-year appreciation
+15.2%
10-year appreciation
+88.6%
Peak value since 2000 (Jun 2022)
$2.46M
House Price Index (state)
596.1 (-1.0% YoY)

Sources: home value index (ZIP-level) · FHFA House Price Index (state-level)

Market activity

Median sale price
$2.31M
Median list price
$2.30M
Median price per sqft
$799
1-year sale-price change
-2.2%
Median days on market
7 days
Homes sold (recent period)
65
For-sale inventory
94
Sale-to-list ratio
99.3%
Active listings
66
1-year forecast
-0.4%
Days to pending
31 days
New listings (monthly)
31

Source: recent area sales and market data (ZIP-level)

Rents

Typical rent
$2,827/mo
1-year rent change
+3.0%
Studio fair-market rent
$2,091/mo
1BR fair-market rent
$2,180/mo
2BR fair-market rent
$2,549/mo
3BR fair-market rent
$3,324/mo
4BR fair-market rent
$3,954/mo

Sources: market rent index (ZIP-level) · HUD Fair Market Rents (metro/county-level, 40th-percentile regulatory reference)

Affordability

Cost of living index (Above Average)
107.0 (100 = US avg)
Electricity rate (state-level)
13.1¢/kWh
Natural gas rate (state-level)
$17.60/MCF
30-year mortgage rate (national)
7.40%
15-year mortgage rate (national)
6.73%

Sources: BEA Regional Price Parities (metro/state-level) · EIA energy rates (state-level) · Freddie Mac PMMS (national)

Schools

Total schools
6
Elementary schools
4
Middle schools
1
High schools
1
Avg student-teacher ratio
18.0 : 1
Schools include
Island Park Elementary, Lakeridge Elementary School, Mercer Island High School, Islander Middle School, West Mercer Elementary

Source: NCES school directory, 2024-25 (school-address-based)

Natural hazards & flood risk

Overall hazard risk (county)
Very High
Top hazards (county)
avalanche, earthquake, inland flooding, heat wave, ice storm
Notable hazard ratings (county)
avalanche: Very High · earthquake: Very High · inland flooding: Very High · heat wave: Relatively High · ice storm: Relatively High · landslide: Relatively High
Most common flood zone among NFIP claims
Zone X
NFIP flood claims on record
13
Wildfire risk to homes (county)
Higher than 65% of US counties
Buildings in wildfire direct-exposure zone
14.8%
Radon potential (county)
Low radon potential — EPA Zone 3 of 3
EPA Superfund (NPL) sites within 5 mi
2
Nearest Superfund site
Quendall Terminals (2.8 mi)
Flood zones vary by property. Look up a specific address on the FEMA Flood Map Service Center.
EPA recommends radon testing for every home regardless of zone.

Sources: FEMA National Risk Index (county-level) · FEMA NFIP flood-insurance claims (ZIP-level) · USDA Forest Service Wildfire Risk to Communities (county-level) · EPA radon zones + Superfund NPL

Climate (30-year normals)

Annual precipitation
43.9 in
USDA plant hardiness zone
9a (extreme annual low 20 to 25°F)

Sources: NOAA Climate Normals (30-year, nearest-station) · USDA Plant Hardiness Zone Map (2023)

Air quality

Air quality rating
Good
Median AQI (annual)
43
Days with Good air quality
245
Days with Moderate air quality
120
Highest AQI recorded (year)
97

Source: EPA annual air quality index (county-level)

Walkability & transit

Walkability index
12.3 / 20
Transit service frequency
449
Jobs reachable by car (30 min)
144,852
Jobs reachable by transit (45 min)
80,857

Source: EPA Smart Location Database (metropolitan block groups)

Amenities

National parks within ~60 mi
4
Nearest national park
Wing Luke Museum Affiliated Area (5 mi)
National parks include
Wing Luke Museum Affiliated Area, Klondike Gold Rush - Seattle Unit National Historical Park, Ebey's Landing National Historical Reserve
Airports within 30 mi
31
Nearest airport
King County International Airport - Boeing Field (BFI) (4 mi)
Nearest major airport
King County International Airport - Boeing Field (BFI) (4 mi)
Hospitals in or near this ZIP
36
Hospitals include
VIRGINIA MASON MEDICAL CENTER, UNIVERSITY OF WASHINGTON MEDICAL CTR, HIGHLINE MEDICAL CENTER
Avg hospital rating (CMS)
3.5 / 5
Best hospital rating nearby (CMS)
5.0 / 5
Solar radiation rating
Poor (3.5 kWh/m²/day)

Sources: National Park Service · FAA airport data · CMS hospital data (same ZIP, else within ~40 mi) · DOE/NREL (proximity-based)

Migration

Net migration (county)
-5,092 tax filers

Source: IRS SOI county-to-county migration (county-level; published with a multi-year lag)

Housing stock

Median year housing built
1973
Housing built before 1970
45.4%
Housing built 2000 or later
23.0%
Median annual property tax
$10,001
Mean commute to work
15 min
Households with broadband internet
85.7%

Source: Census ACS 5-year estimates (ZIP-level)

Employment & development

Total county employment
1,255,504
Average weekly wage
$2,730
Top industries (by employment)
Health Care, Professional Services, Information
Annual residential building permits (county)
8,505

Sources: BLS QCEW (county-level) · Census Building Permits (county-level)

How it compares

Mercer IslandState medianUS median
Typical home value$2.26M$498,615$288,527
Median sale price$2.31M$510,000$325,000
Median days on market7 days29 days51 days
Typical rent$2,827/mo$2,057/mo$1,809/mo
Median annual property tax$10,001$3,381$2,006

State and US medians are computed across all US ZIP codes with sufficient public-data coverage, from the same sources as the figures above.

Area data compiled from public government, academic, and industry research feeds. Data sources →

Common questions

What is the typical home value in Mercer Island, WA?
$2.26M.
What is the median sale price in Mercer Island, WA?
$2.31M.
How long do homes take to sell in Mercer Island, WA?
Median days on market: 7 days.
What is typical rent in Mercer Island, WA?
Typical rent: $2,827/month.
What is the natural-hazard risk in Mercer Island, WA?
Overall risk: Very High (FEMA NRI, county-level). Top hazards: avalanche, earthquake, inland flooding, heat wave, ice storm.
Is Mercer Island, WA in a flood zone?
Flood zones vary by property within Mercer Island, WA. 13 FEMA flood-insurance (NFIP) claims are on record; the most common zone among them is X. Check a specific address on the FEMA Flood Map Service Center.
What is the wildfire risk in Mercer Island, WA?
Risk to homes is higher than 65% of US counties (USDA Forest Service Wildfire Risk to Communities, county-level).
What is the radon potential in Mercer Island, WA?
Low radon potential — EPA Zone 3 of 3, county-level. EPA recommends testing every home regardless of zone.
Are there Superfund sites near Mercer Island, WA?
2 current or proposed National Priorities List sites within 5 miles (EPA). Nearest site: Quendall Terminals, 2.8 mi.
How many schools serve Mercer Island, WA?
6 schools (4 elementary, 1 middle, 1 high) (NCES, 2024-25).
Is Mercer Island, WA walkable?
Walkability index: 12.3/20 (EPA Smart Location Database).
What is the air quality in Mercer Island, WA?
Good. Median AQI: 43. (EPA AQI).
What is the cost of living in Mercer Island, WA?
Regional Price Parity: 107.0 (100 = US average) (Above Average) (BEA RPP, metro/state-level).

ZIP code for Mercer Island

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Data last updated

Most recent source refresh: Oct 2026. See all data sources →

Data compiled by REAIGENT7 — AI listing platform for real estate agents