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CA area data

Union city, CA

Union city, CA.

Population: 67,464 (Census ACS)

The median home value in Union city, CA is $1.22M — down 4.1% over the past year. Homes sell for a median $1.50M after a median 200 days on market. Typical rent runs $2,941/month. 11 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

$1.22M

Median home value

-4.1%

1-year change

200

Median days on market

Very High

Hazard risk (county)

Home values & appreciation

Median home value
$1.22M
1-year appreciation
-4.1%
3-year appreciation
+4.5%
5-year appreciation
+9.8%
10-year appreciation
+70.1%
All-time peak (2022-05)
$1.33M
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
$1.50M
Median list price
$1.20M
Median price per sqft
$437
Median days on market
200 days
Homes sold (recent period)
2
For-sale inventory
104
Sale-to-list ratio
84.5%
Active listings
3
1-year forecast
-2.0%
Days to pending
38 days
New listings (monthly)
35

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

Rents

Typical rent
$2,941/mo
1-year rent change
+4.1%
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
11
Elementary schools
6
Middle schools
2
High schools
1
Charter schools
1
School districts serving the area
Connecting Waters Charter - East Bay District, New Haven Unified
Schools include
Connecting Waters Charter - East Bay, Alvarado Elementary, Itliong-Vera Cruz, James Logan High, Cesar Chavez Middle

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
B
Flood risk level
Moderate
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
South Bay Asbestos Area (12.1 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
57.0°F
Average high
64.0°F
Average low
50.0°F
Annual precipitation
37.0 in
Annual snowfall
3.1 in
USDA plant hardiness zone
10a (extreme annual low 30 to 35°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
13.0 / 20
Transit service frequency
483
Jobs reachable by car (30 min)
140,759
Jobs reachable by transit (45 min)
125,653

Source: EPA Smart Location Database (metropolitan block groups)

Amenities

National parks within ~60 mi
11
Nearest national park
Eugene O'Neill National Historic Site (15 mi)
National parks include
Eugene O'Neill National Historic Site, San Francisco Maritime National Historical Park, John Muir National Historic Site
Airports within 30 mi
14
Nearest airport
Boneyard Airstrip (4 mi)
Nearest major airport
Palo Alto Airport (PAO) (11 mi)
Hospitals nearby (~15 mi)
23
Hospitals include
ST ROSE HOSPITAL, PENINSULA MEDICAL CENTER, ALTA BATES SUMMIT MEDICAL CENTER
Avg hospital rating (CMS)
3.4 / 5
Best hospital rating nearby (CMS)
5.0 / 5
EV charging stations (within 10 mi)
525
Solar radiation rating
Good (5.0 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
1,980
Housing built before 1970
21.0%
Housing built 2000 or later
16.7%
Median annual property tax
$8,217
Mean commute to work
26 min
Households with broadband internet
83.8%

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

Union cityState medianUS median
Median home value$1.22M$702,573$289,727
Median sale price$1.50M$696,000$325,000
Median days on market200 days39 days51 days
Typical rent$2,941/mo$2,767/mo$1,808/mo
Median annual property tax$8,217$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 Union city, CA?
$1.22M.
What is the median sale price in Union city, CA?
$1.50M.
How long do homes take to sell in Union city, CA?
Median days on market: 200 days.
What is typical rent in Union city, CA?
Typical rent: $2,941/month.
What is the natural-hazard risk in Union city, CA?
Overall risk: Very High (FEMA NRI, county-level). Top hazards: earthquake, inlandFlooding, coastalFlooding, heatWave, landslide.
Is Union city, CA in a flood zone?
Moderate (FEMA NFIP). FEMA flood zone B.
What is the wildfire risk in Union city, 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 Union city, CA?
Moderate radon potential — EPA Zone 2 of 3, county-level. EPA recommends testing every home regardless of zone.
Are there Superfund sites near Union city, CA?
No current or proposed National Priorities List sites within 5 miles (EPA).
How many schools serve Union city, CA?
11 schools (6 elementary, 2 middle, 1 high) (NCES, 2022-23).
Is Union city, CA walkable?
Walkability index: 13.0/20 (EPA Smart Location Database).
What is the air quality in Union city, CA?
Good. Median AQI: 48. (EPA AQI).
What is the cost of living in Union city, CA?
Regional Price Parity: 113.3 (100 = US average) (High) (BEA RPP, metro/state-level).

ZIP code for Union city

Selling a home in Union city, 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