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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).

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

$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)
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
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 98303State medianUS median
Median home value$489,395$504,993$289,727
Median sale price$455,000$510,000$325,000
Median days on market102 days29 days51 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 →

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