WA area data
Mercer island, WA
Mercer island, WA.
Population: 25,307 (Census ACS)
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
- 588.1 (+2.2% YoY)
Market activity
- Median sale price
- $525,000
- Median list price
- $508,000
- Median days on market
- 14 days
- Sale-to-list ratio
- 97.6%
- Active listings
- 10
- 1-year forecast
- -1.1%
- Days to pending
- 40 days
- New listings (monthly)
- 32
Rents
- Typical rent
- $2,746/mo
- 1-year rent change
- +1.9%
- 1BR fair-market rent
- $2,590/mo
- 3BR fair-market rent
- $3,950/mo
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%
Schools
- Total schools
- 6
- Elementary schools
- 4
- Middle schools
- 1
- High schools
- 1
Natural hazards & flood risk
- Overall hazard risk
- Very High
- Top hazards
- avalanche, earthquake, inlandFlooding, heatWave, iceStorm
- FEMA flood zone
- X
- Flood risk level
- Minimal
Climate (30-year normals)
- Annual precipitation
- 43.8 in
Air quality
- Air quality rating
- Good
- Median AQI (annual)
- 46
- Days with Good air quality
- 214
- Days with Unhealthy air quality
- 1
Walkability & transit
- Walkability index
- 12.3 / 20
- Transit service frequency
- 449
Amenities
- National parks within ~60 mi
- 4
- Nearest national park
- Wing Luke Museum Affiliated Area (5 mi)
- 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
- Avg hospital rating
- 3.3 / 5
- Solar radiation rating
- Poor (3.5 kWh/m²/day)
Migration
- Net migration
- -5,092 tax filers
Housing stock
- Median year housing built
- 1,973
- Median annual property tax
- $10,001
- Mean commute to work
- 15 min
- Households with broadband internet
- 85.7%
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
Area data compiled from public government, academic, and industry research feeds. Data sources →
Data last updated
Most recent source refresh: Aug 2026. See all data sources →