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CA area data

Castro valley, CA

Aggregated across 2 ZIP codes in Castro valley.

Population: 59,361 (Census ACS)

The median home value in Castro valley, CA is $1.20M — down 0.3% over the past year. Homes sell for a median $1.17M after a median 12 days on market. Typical rent runs $3,393/month. 17 schools serve the area (NCES). FEMA's National Risk Index rates the county's overall natural-hazard risk Very High, with earthquake, inlandflooding, coastalflooding the top-rated hazards. Cost of living is 13.3% above the US average (BEA, metro/state-level).

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

$1.20M

Median home value

-0.3%

1-year change

12

Median days on market

Very High

Hazard risk (county)

Home values & appreciation

Median home value
$1.20M
1-year appreciation
-0.3%
3-year appreciation
+5.0%
5-year appreciation
+8.1%
10-year appreciation
+62.6%
All-time peak (2022-06)
$1.30M
House Price Index (state)
417.4 (-0.8% YoY)

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

Market activity

Median sale price
$1.17M
Median list price
$1.17M
Median price per sqft
$620
1-year sale-price change
+5.1%
Median days on market
12 days
Homes sold (recent period)
14
For-sale inventory
89
Sale-to-list ratio
101.0%
Active listings
7
1-year forecast
-1.8%
Days to pending
26 days
New listings (monthly)
40

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

Rents

Typical rent
$3,393/mo
1-year rent change
+4.3%
Studio fair-market rent
$1,495/mo
1BR fair-market rent
$1,869/mo
2BR fair-market rent
$2,330/mo
3BR fair-market rent
$3,029/mo
4BR fair-market rent
$3,495/mo

Sources: market rent index (ZIP-level) · HUD Fair Market Rents (metro/county-level, 40th-percentile regulatory reference)

Affordability

Cost of living index (High)
113.3 (100 = US avg)
Electricity rate (state-level)
32.5¢/kWh
Natural gas rate (state-level)
$22.00/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
17
Elementary schools
9
Middle schools
2
High schools
3
School districts serving the area
Castro Valley Unified, Hayward Unified
Schools include
Castro Valley Elementary, Castro Valley High, Redwood Continuation High, Marshall Elementary, Proctor Elementary

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

Natural hazards & flood risk

Overall hazard risk (county)
Very High
Top hazards (county)
earthquake, inlandFlooding, coastalFlooding, heatWave, landslide
Notable hazard ratings (county)
coastalFlooding: Relatively High · drought: Relatively Moderate · earthquake: Very High · hail: Relatively Low · heatWave: Relatively High · inlandFlooding: Very High
FEMA flood zone (varies by location)
includes X
Flood risk level
Minimal
Wildfire risk to homes (county)
Higher than 97% of US counties
Buildings in wildfire direct-exposure zone
5.4%
Radon potential (county)
Moderate radon potential — EPA Zone 2 of 3
EPA Superfund (NPL) sites within 5 mi
None
Nearest Superfund site
AMCO Chemical (13.2 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
60.0°F
Average high
69.0°F
Average low
51.0°F
Annual precipitation
16.9 in
USDA plant hardiness zone
9b (extreme annual low 25 to 30°F)

Sources: NOAA Climate Normals (30-year, nearest-station) · USDA Plant Hardiness Zone Map (2023)

Air quality

Air quality rating
Good
Median AQI (annual)
48
Days with Good air quality
197
Days with Moderate air quality
155
Highest AQI recorded (year)
130

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

Walkability & transit

Walkability index
10.5 / 20
Transit service frequency
-49,944
Jobs reachable by car (30 min)
124,261
Jobs reachable by transit (45 min)
114,697

Source: EPA Smart Location Database (metropolitan block groups)

Amenities

National parks within ~60 mi
22
Nearest national park
Eugene O'Neill National Historic Site (7 mi)
National parks include
Eugene O'Neill National Historic Site, John Muir National Historic Site, San Francisco Maritime National Historical Park
Airports within 30 mi
32
Nearest airport
Boneyard Airstrip (4 mi)
Nearest major airport
San Francisco Bay Oakland International Airport (OAK) (8 mi)
Hospitals nearby (~15 mi)
12
Hospitals include
EDEN MEDICAL CENTER, ST ROSE HOSPITAL, PENINSULA MEDICAL CENTER
Avg hospital rating (CMS)
3.6 / 5
Best hospital rating nearby (CMS)
4.5 / 5
EV charging stations (within 10 mi)
473
Solar radiation rating
Good (4.9 kWh/m²/day)

Sources: National Park Service · FAA airport data · CMS hospital data · DOE/NREL (proximity-based)

Migration

Net migration (county)
-11,985 tax filers

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

Housing stock

Median year housing built
1,974
Housing built before 1970
41.4%
Housing built 2000 or later
6.7%
Median annual property tax
$8,629
Mean commute to work
26 min
Households with broadband internet
85.5%

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

Employment & development

Total county employment
685,689
Average weekly wage
$1,798
Top industries (by employment)
Health Care, Professional Services, Accommodation & Food
Annual residential building permits (county)
725

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

How it compares

Castro valleyState medianUS median
Median home value$1.20M$702,573$289,727
Median sale price$1.17M$696,000$325,000
Median days on market12 days39 days51 days
Typical rent$3,393/mo$2,767/mo$1,808/mo
Median annual property tax$8,629$4,533$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 Castro valley, CA?
$1.20M.
What is the median sale price in Castro valley, CA?
$1.17M.
How long do homes take to sell in Castro valley, CA?
Median days on market: 12 days.
What is typical rent in Castro valley, CA?
Typical rent: $3,393/month.
What is the natural-hazard risk in Castro valley, CA?
Overall risk: Very High (FEMA NRI, county-level). Top hazards: earthquake, inlandFlooding, coastalFlooding, heatWave, landslide.
Is Castro valley, CA in a flood zone?
Minimal (FEMA NFIP). Parts of the area include FEMA flood zone X; zones vary by location within the city.
What is the wildfire risk in Castro valley, CA?
Risk to homes is higher than 97% of US counties (USDA Forest Service Wildfire Risk to Communities, county-level).
What is the radon potential in Castro valley, CA?
Moderate radon potential — EPA Zone 2 of 3, county-level. EPA recommends testing every home regardless of zone.
Are there Superfund sites near Castro valley, CA?
No current or proposed National Priorities List sites within 5 miles (EPA).
How many schools serve Castro valley, CA?
17 schools (9 elementary, 2 middle, 3 high) (NCES, 2022-23).
Is Castro valley, CA walkable?
Walkability index: 10.5/20 (EPA Smart Location Database).
What is the air quality in Castro valley, CA?
Good. Median AQI: 48. (EPA AQI).
What is the cost of living in Castro valley, CA?
Regional Price Parity: 113.3 (100 = US average) (High) (BEA RPP, metro/state-level).

ZIP codes in Castro valley

Selling a home in Castro valley, CA?

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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