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WA area data

Castle rock, WA

Castle rock, WA.

Population: 9,302 (Census ACS)

The median home value in Castle rock, WA is $487,160 — up 1.1% over the past year. Homes sell for a median $487,500 after a median 78 days on market. 4 schools serve the area (NCES). FEMA's National Risk Index rates the county's overall natural-hazard risk Relatively Moderate, with volcanicactivity, 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

$487,160

Median home value

+1.1%

1-year change

78

Median days on market

Relatively Moderate

Hazard risk (county)

Home values & appreciation

Median home value
$487,160
1-year appreciation
+1.1%
3-year appreciation
+4.4%
5-year appreciation
+14.9%
10-year appreciation
+113.8%
All-time peak (2026-02)
$490,652
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
$487,500
Median list price
$584,750
Median price per sqft
$289
1-year sale-price change
-2.5%
Median days on market
78 days
Homes sold (recent period)
16
For-sale inventory
44
Sale-to-list ratio
98.5%
Active listings
35
1-year forecast
-0.6%
New listings (monthly)
13

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

Rents

Studio fair-market rent
$1,083/mo
1BR fair-market rent
$1,354/mo
2BR fair-market rent
$1,680/mo
3BR fair-market rent
$2,183/mo
4BR fair-market rent
$2,519/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
4
Elementary schools
1
Middle schools
1
High schools
1
Schools include
Castle Rock Elementary, Castle Rock High School, Castle Rock Middle School, Castle Rock Virtual Academy

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

Natural hazards & flood risk

Overall hazard risk (county)
Relatively Moderate
Top hazards (county)
volcanicActivity, coldWave, earthquake, heatWave, inlandFlooding
Notable hazard ratings (county)
coastalFlooding: Relatively Low · coldWave: Relatively Moderate · earthquake: Relatively Moderate · heatWave: Relatively Moderate · iceStorm: Relatively Low · inlandFlooding: Relatively Moderate
Wildfire risk to homes (county)
Higher than 31% of US counties
Buildings in wildfire direct-exposure zone
45.7%
Radon potential (county)
Low radon potential — EPA Zone 3 of 3
EPA Superfund (NPL) sites within 5 mi
None
Nearest Superfund site
Hamilton/Labree Roads Ground Water Contamination (22.1 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)

Average annual temperature
54.0°F
Average high
63.0°F
Average low
44.0°F
Annual precipitation
48.5 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)
22
Days with Good air quality
323
Days with Moderate air quality
42
Highest AQI recorded (year)
89

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

Walkability & transit

Walkability index
5.2 / 20
Transit service frequency
-99,999
Jobs reachable by car (30 min)
3,043
Jobs reachable by transit (45 min)
4,112

Source: EPA Smart Location Database (metropolitan block groups)

Amenities

National parks within ~60 mi
2
Nearest national park
Fort Vancouver National Historic Site (49 mi)
National parks include
Fort Vancouver National Historic Site, Lewis and Clark National Historical Park
Airports within 30 mi
19
Nearest airport
Cougar Flat Airstrip (3 mi)
Nearest major airport
Southwest Washington Regional Airport (KLS) (13 mi)
Hospitals nearby (~15 mi)
1
Hospitals include
PEACEHEALTH ST JOHN MEDICAL CENTER
Avg hospital rating (CMS)
3.0 / 5
Best hospital rating nearby (CMS)
3.0 / 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)
+538 tax filers

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

Housing stock

Median year housing built
1,982
Housing built before 1970
32.0%
Housing built 2000 or later
24.6%
Median annual property tax
$3,048
Mean commute to work
27 min
Households with broadband internet
61.4%

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

Employment & development

Total county employment
34,649
Average weekly wage
$1,234
Top industries (by employment)
Health Care, Accommodation & Food, Construction
Annual residential building permits (county)
297

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

How it compares

Castle rockState medianUS median
Median home value$487,160$504,993$289,727
Median sale price$487,500$510,000$325,000
Median days on market78 days29 days51 days
Median annual property tax$3,048$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 Castle rock, WA?
$487,160.
What is the median sale price in Castle rock, WA?
$487,500.
How long do homes take to sell in Castle rock, WA?
Median days on market: 78 days.
What is typical rent in Castle rock, WA?
2-bedroom fair-market rent: $1,680/month (HUD FMR — a 40th-percentile regulatory reference, not market-observed).
What is the natural-hazard risk in Castle rock, WA?
Overall risk: Relatively Moderate (FEMA NRI, county-level). Top hazards: volcanicActivity, coldWave, earthquake, heatWave, inlandFlooding.
What is the wildfire risk in Castle rock, WA?
Risk to homes is higher than 31% of US counties (USDA Forest Service Wildfire Risk to Communities, county-level).
What is the radon potential in Castle rock, WA?
Low radon potential — EPA Zone 3 of 3, county-level. EPA recommends testing every home regardless of zone.
Are there Superfund sites near Castle rock, WA?
No current or proposed National Priorities List sites within 5 miles (EPA).
How many schools serve Castle rock, WA?
4 schools (1 elementary, 1 middle, 1 high) (NCES, 2022-23).
Is Castle rock, WA walkable?
Walkability index: 5.2/20 (EPA Smart Location Database).
What is the air quality in Castle rock, WA?
Good. Median AQI: 22. (EPA AQI).
What is the cost of living in Castle rock, WA?
Regional Price Parity: 107.5 (100 = US average) (Above Average) (BEA RPP, metro/state-level).

ZIP code for Castle rock

Selling a home in Castle rock, 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