Area data
Anderson Island, WA — ZIP 98303
Population: 1,448 (Census ACS)
The median home value in ZIP 98303 (Anderson Island, WA) is $489,395 — down 1.6% over the past year. Homes sell for a median $455,000 after a median 102 days on market. 1 schools serve the area (NCES). FEMA's National Risk Index rates the county's overall natural-hazard risk Relatively High, with avalanche, coldwave, earthquake the top-rated hazards. Cost of living is 7.5% above the US average (BEA, metro/state-level).
$489,395
Median home value
-1.6%
1-year change
102
Median days on market
Relatively High
Hazard risk (county)
Home values & appreciation
- Median home value
- $489,395
- 1-year appreciation
- -1.6%
- 3-year appreciation
- +0.1%
- 5-year appreciation
- +6.3%
- 10-year appreciation
- +94.4%
- All-time peak (2025-01)
- $520,112
- 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
- $455,000
- Median list price
- $475,000
- Median price per sqft
- $308
- 1-year sale-price change
- -15.0%
- Median days on market
- 102 days
- Homes sold (recent period)
- 7
- For-sale inventory
- 32
- Sale-to-list ratio
- 98.0%
- Active listings
- 28
- 1-year forecast
- -0.1%
- New listings (monthly)
- 10
Source: recent area sales and market data (ZIP-level)
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
- 1
- Elementary schools
- 1
- Middle schools
- 0
- High schools
- 0
- Schools include
- Anderson Island Elementary
Source: NCES school directory, 2022-23 (school-address-based)
Natural hazards & flood risk
- Overall hazard risk (county)
- Relatively High
- Top hazards (county)
- avalanche, coldWave, earthquake, heatWave, iceStorm
- Notable hazard ratings (county)
- avalanche: Very High · coastalFlooding: Relatively Moderate · coldWave: Relatively High · earthquake: Relatively High · heatWave: Relatively High · iceStorm: Relatively High
- Wildfire risk to homes (county)
- Higher than 74% of US counties
- Buildings in wildfire direct-exposure zone
- 19.6%
- Radon potential (county)
- Low radon potential — EPA Zone 3 of 3
- EPA Superfund (NPL) sites within 5 mi
- None
- Nearest Superfund site
- Fort Lewis Logistics Center (8.5 mi)
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
- 72.2 in
- USDA plant hardiness zone
- 8b (extreme annual low 15 to 20°F)
Sources: NOAA Climate Normals (30-year, nearest-station) · USDA Plant Hardiness Zone Map (2023)
Air quality
- Air quality rating
- Good
- Median AQI (annual)
- 42
- Days with Good air quality
- 273
- Days with Moderate air quality
- 89
- Days with Unhealthy air quality
- 3
- Highest AQI recorded (year)
- 195
Source: EPA air quality data (nearest monitoring station, annual)
Amenities
- National parks within ~60 mi
- 3
- Nearest national park
- Klondike Gold Rush - Seattle Unit National Historical Park (35 mi)
- National parks include
- Klondike Gold Rush - Seattle Unit National Historical Park, Wing Luke Museum Affiliated Area, Mount Rainier National Park
- Airports within 30 mi
- 41
- Nearest airport
- Howell Airport (3 mi)
- Nearest major airport
- Gray Army Air Field (GRF) (8 mi)
- Hospitals nearby (~15 mi)
- 1,090
- Hospitals include
- MIZELL MEMORIAL HOSPITAL, CRENSHAW COMMUNITY HOSPITAL, CRENSHAW COMMUNITY HOSPITAL
- Avg hospital rating (CMS)
- 3.1 / 5
- Best hospital rating nearby (CMS)
- 5.0 / 5
- Solar radiation rating
- Poor (3.4 kWh/m²/day)
Sources: National Park Service · FAA airport data · CMS hospital data · DOE/NREL (proximity-based)
Migration
- Net migration (county)
- +242 tax filers
Source: IRS county-to-county migration data (county-level, ~12-month lag)
Housing stock
- Median year housing built
- 1,993
- Housing built before 1970
- 22.8%
- Housing built 2000 or later
- 21.0%
- Median annual property tax
- $5,225
- Households with broadband internet
- 43.6%
Source: Census ACS 5-year estimates (ZIP-level)
Employment & development
- Total county employment
- 272,091
- Average weekly wage
- $1,222
- Top industries (by employment)
- Health Care, Accommodation & Food, Administrative Services
- Annual residential building permits (county)
- 1,729
Sources: BLS QCEW (county-level) · Census Building Permits (county-level)
How it compares
| ZIP 98303 | State median | US median | |
|---|---|---|---|
| Median home value | $489,395 | $504,993 | $289,727 |
| Median sale price | $455,000 | $510,000 | $325,000 |
| Median days on market | 102 days | 29 days | 51 days |
| Median annual property tax | $5,225 | $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 ZIP 98303?
- $489,395.
- What is the median sale price in ZIP 98303?
- $455,000.
- How long do homes take to sell in ZIP 98303?
- Median days on market: 102 days.
- What is the natural-hazard risk in ZIP 98303?
- Overall risk: Relatively High (FEMA NRI, county-level). Top hazards: avalanche, coldWave, earthquake, heatWave, iceStorm.
- What is the wildfire risk in ZIP 98303?
- Risk to homes is higher than 74% of US counties (USDA Forest Service Wildfire Risk to Communities, county-level).
- What is the radon potential in ZIP 98303?
- Low radon potential — EPA Zone 3 of 3, county-level. EPA recommends testing every home regardless of zone.
- Are there Superfund sites near ZIP 98303?
- No current or proposed National Priorities List sites within 5 miles (EPA).
- How many schools serve ZIP 98303?
- 1 schools (1 elementary) (NCES, 2022-23).
- What is the air quality in ZIP 98303?
- Good. Median AQI: 42. (EPA AQI).
- What is the cost of living in ZIP 98303?
- Regional Price Parity: 107.5 (100 = US average) (Above Average) (BEA RPP, metro/state-level).
Nearby ZIP codes
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Data last updated
Most recent source refresh: Sep 2026. See all data sources →