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WA area data

Mercer island, WA

Mercer island, WA.

Population: 25,307 (Census ACS)

The median home value in Mercer island, WA is $2.29M — down 1.5% over the past year. Homes sell for a median $525,000 after a median 14 days on market. Typical rent runs $2,746/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, inlandflooding the top-rated hazards. Cost of living is 7.5% above the US average (BEA, metro/state-level).

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

$2.29M

Median home value

-1.5%

1-year change

14

Median days on market

Very High

Hazard risk (county)

Home values & appreciation

Median home value
$2.29M
1-year appreciation
-1.5%
3-year appreciation
+7.1%
5-year appreciation
+15.8%
10-year appreciation
+88.6%
All-time peak (2022-06)
$2.51M
House Price Index (state)
588.1 (+2.2% YoY)

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

Market activity

Median sale price
$525,000
Median list price
$508,000
Median price per sqft
$537
1-year sale-price change
-17.3%
Median days on market
14 days
Homes sold (recent period)
7
For-sale inventory
86
Sale-to-list ratio
97.6%
Active listings
10
1-year forecast
-1.1%
Days to pending
40 days
New listings (monthly)
32

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

Rents

Typical rent
$2,746/mo
1-year rent change
+1.9%
Studio fair-market rent
$2,500/mo
1BR fair-market rent
$2,590/mo
2BR fair-market rent
$3,020/mo
3BR fair-market rent
$3,950/mo
4BR fair-market rent
$4,650/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)
107.5 (100 = US avg)
Electricity rate (state-level)
13.1¢/kWh
Natural gas rate (state-level)
$17.60/MCF
30-year mortgage rate (national)
6.66%
15-year mortgage rate (national)
6.00%

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
Schools include
Island Park Elementary, Lakeridge Elementary School, Mercer Island High School, Islander Middle School, West Mercer Elementary

Source: NCES school directory, 2022-23 (school-address-based)

Natural hazards & flood risk

Overall hazard risk (county)
Very High
Top hazards (county)
avalanche, earthquake, inlandFlooding, heatWave, iceStorm
Notable hazard ratings (county)
avalanche: Very High · coastalFlooding: Relatively Moderate · coldWave: Relatively Low · earthquake: Very High · heatWave: Relatively High · iceStorm: Relatively High
FEMA flood zone
X
Flood risk level
Minimal
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)
EPA recommends radon testing for every home regardless of zone.

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

Climate (30-year normals)

Annual precipitation
43.8 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)
46
Days with Good air quality
214
Days with Moderate air quality
145
Days with Unhealthy air quality
1
Highest AQI recorded (year)
165

Source: EPA air quality data (nearest monitoring station, annual)

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 nearby (~15 mi)
15
Hospitals include
VIRGINIA MASON MEDICAL CENTER, HIGHLINE MEDICAL CENTER, SWEDISH MEDICAL CENTER / CHERRY HILL
Avg hospital rating (CMS)
3.3 / 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 · DOE/NREL (proximity-based)

Migration

Net migration (county)
-5,092 tax filers

Source: IRS county-to-county migration data (county-level, ~12-month lag)

Housing stock

Median year housing built
1,973
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
1,282,761
Average weekly wage
$2,389
Top industries (by employment)
Health Care, Professional Services, Information
Annual residential building permits (county)
2,030

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

How it compares

Mercer islandState medianUS median
Median home value$2.29M$504,993$289,727
Median sale price$525,000$510,000$325,000
Median days on market14 days29 days51 days
Typical rent$2,746/mo$2,041/mo$1,808/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 median home value in Mercer island, WA?
$2.29M.
What is the median sale price in Mercer island, WA?
$525,000.
How long do homes take to sell in Mercer island, WA?
Median days on market: 14 days.
What is typical rent in Mercer island, WA?
Typical rent: $2,746/month.
What is the natural-hazard risk in Mercer island, WA?
Overall risk: Very High (FEMA NRI, county-level). Top hazards: avalanche, earthquake, inlandFlooding, heatWave, iceStorm.
Is Mercer island, WA in a flood zone?
Minimal (FEMA NFIP). FEMA flood zone X.
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, 2022-23).
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: 46. (EPA AQI).
What is the cost of living in Mercer island, WA?
Regional Price Parity: 107.5 (100 = US average) (Above Average) (BEA RPP, metro/state-level).

ZIP code for Mercer island

Selling a home in Mercer island, WA?

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Data last updated

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

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