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CA area data

Port Costa, CA

Port Costa, CA.

Population: 296 (Census ACS)

The typical home value in Port Costa, CA is $661,743 — up 1.3% over the past year. Homes sell for a median $707,500 after a median 14 days on market. FEMA's National Risk Index rates the county's overall natural-hazard risk Very High, with inland flooding, drought, earthquake the top-rated hazards. Cost of living is 10.7% above the US average (BEA, metro/state-level).

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

$661,743

Typical home value

+1.3%

1-year change

14

Median days on market

Very High

Hazard risk (county)

Home values & appreciation

Typical home value
$661,743
1-year appreciation
+1.3%
3-year appreciation
-4.9%
5-year appreciation
-8.5%
10-year appreciation
+39.4%
Peak value since 2000 (May 2022)
$775,063
House Price Index (state)
423.4 (-0.3% YoY)

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

Market activity

Median sale price
$707,500
Median list price
$715,000
Median price per sqft
$632
1-year sale-price change
+38.7%
Median days on market
14 days
Homes sold (recent period)
1
Sale-to-list ratio
99.0%
1-year forecast
+1.5%

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

Rents

Studio fair-market rent
$2,088/mo
1BR fair-market rent
$2,290/mo
2BR fair-market rent
$2,805/mo
3BR fair-market rent
$3,592/mo
4BR fair-market rent
$4,250/mo

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

Affordability

Cost of living index (High)
110.7 (100 = US avg)
Electricity rate (state-level)
32.5¢/kWh
Natural gas rate (state-level)
$22.00/MCF
30-year mortgage rate (national)
7.40%
15-year mortgage rate (national)
6.73%

Sources: BEA Regional Price Parities (metro/state-level) · EIA energy rates (state-level) · Freddie Mac PMMS (national)

Natural hazards & flood risk

Overall hazard risk (county)
Very High
Top hazards (county)
inland flooding, drought, earthquake, heat wave, landslide
Notable hazard ratings (county)
inland flooding: Very High · drought: Relatively High · heat wave: Relatively High · landslide: Relatively High · lightning: Relatively High · earthquake: Relatively High
Most common flood zone among NFIP claims
Zone A
NFIP flood claims on record
6
Wildfire risk to homes (county)
Higher than 92% of US counties
Buildings in wildfire direct-exposure zone
13.9%
Radon potential (county)
Moderate radon potential — EPA Zone 2 of 3
EPA Superfund (NPL) sites within 5 mi
None
Nearest Superfund site
Concord Naval Weapons Station (10.8 mi)
Flood zones vary by property. Look up a specific address on the FEMA Flood Map Service Center.
EPA recommends radon testing for every home regardless of zone.

Sources: FEMA National Risk Index (county-level) · FEMA NFIP flood-insurance claims (ZIP-level) · USDA Forest Service Wildfire Risk to Communities (county-level) · EPA radon zones + Superfund NPL

Climate (30-year normals)

Average annual temperature
56.0°F
Average high
62.0°F
Average low
51.0°F
Annual precipitation
20.6 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
Moderate
Median AQI (annual)
51
Days with Good air quality
173
Days with Moderate air quality
190
Highest AQI recorded (year)
110

Source: EPA annual air quality index (county-level)

Walkability & transit

Walkability index
4.8 / 20
Transit service frequency
-99,999
Jobs reachable by car (30 min)
62,735
Jobs reachable by transit (45 min)
64,966

Source: EPA Smart Location Database (metropolitan block groups)

Amenities

National parks within ~60 mi
11
Nearest national park
John Muir National Historic Site (6 mi)
National parks include
John Muir National Historic Site, Port Chicago Naval Magazine National Memorial, Rosie the Riveter WWII Home Front National Historical Park
Airports within 30 mi
15
Nearest airport
Buchanan Field (CCR) (9 mi)
Nearest major airport
Buchanan Field (CCR) (9 mi)
Hospitals in or near this ZIP
61
Hospitals include
ST ROSE HOSPITAL, PENINSULA MEDICAL CENTER, CALIFORNIA PACIFIC MEDICAL CTR-DAVIES CAMPUS HOSP
Avg hospital rating (CMS)
3.3 / 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 (same ZIP, else within ~40 mi) · DOE/NREL (proximity-based)

Migration

Net migration (county)
-5,001 tax filers

Source: IRS SOI county-to-county migration (county-level; published with a multi-year lag)

Housing stock

Median year housing built
1938
Housing built before 1970
91.4%
Housing built 2000 or later
0.0%
Median annual property tax
$5,979
Mean commute to work
2 min
Households with broadband internet
56.2%

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

Employment & development

Total county employment
324,325
Average weekly wage
$1,660
Top industries (by employment)
Health Care, Accommodation & Food, Construction
Annual residential building permits (county)
1,163

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

How it compares

Port CostaState medianUS median
Typical home value$661,743$695,380$288,527
Median sale price$707,500$696,000$325,000
Median days on market14 days39 days51 days
Median annual property tax$5,979$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 typical home value in Port Costa, CA?
$661,743.
What is the median sale price in Port Costa, CA?
$707,500.
How long do homes take to sell in Port Costa, CA?
Median days on market: 14 days.
What is typical rent in Port Costa, CA?
2-bedroom fair-market rent: $2,805/month (HUD FMR — a 40th-percentile regulatory reference, not market-observed).
What is the natural-hazard risk in Port Costa, CA?
Overall risk: Very High (FEMA NRI, county-level). Top hazards: inland flooding, drought, earthquake, heat wave, landslide.
Is Port Costa, CA in a flood zone?
Flood zones vary by property within Port Costa, CA. 6 FEMA flood-insurance (NFIP) claims are on record; the most common zone among them is A. Check a specific address on the FEMA Flood Map Service Center.
What is the wildfire risk in Port Costa, CA?
Risk to homes is higher than 92% of US counties (USDA Forest Service Wildfire Risk to Communities, county-level).
What is the radon potential in Port Costa, CA?
Moderate radon potential — EPA Zone 2 of 3, county-level. EPA recommends testing every home regardless of zone.
Are there Superfund sites near Port Costa, CA?
No current or proposed National Priorities List sites within 5 miles (EPA).
Is Port Costa, CA walkable?
Walkability index: 4.8/20 (EPA Smart Location Database).
What is the air quality in Port Costa, CA?
Moderate. Median AQI: 51. (EPA AQI).
What is the cost of living in Port Costa, CA?
Regional Price Parity: 110.7 (100 = US average) (High) (BEA RPP, metro/state-level).

ZIP code for Port Costa

Listing a home in Port Costa, CA?

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Data last updated

Most recent source refresh: Oct 2026. See all data sources →

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