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CA area data

San Gregorio, CA

San Gregorio, CA.

Population: 126 (Census ACS)

FEMA's National Risk Index rates the county's overall natural-hazard risk Relatively High, with coastalflooding, 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

Home values & appreciation

House Price Index (state)
417.4 (-0.8% YoY)

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

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)
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)

Natural hazards & flood risk

Overall hazard risk (county)
Relatively High
Top hazards (county)
coastalFlooding, drought, earthquake, inlandFlooding, landslide
Notable hazard ratings (county)
coastalFlooding: Relatively High · drought: Relatively High · earthquake: Relatively High · heatWave: Relatively Moderate · inlandFlooding: Relatively High · landslide: Relatively High
Wildfire risk to homes (county)
Higher than 72% of US counties
Buildings in wildfire direct-exposure zone
12.7%
Radon potential (county)
Moderate radon potential — EPA Zone 2 of 3
EPA Superfund (NPL) sites within 5 mi
None
Nearest Superfund site
Hewlett-Packard (620-640 Page Mill Road) (13.5 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)

Average annual temperature
61.0°F
Average high
78.0°F
Average low
44.0°F
Annual precipitation
45.1 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)
27
Days with Good air quality
281
Days with Moderate air quality
38
Highest AQI recorded (year)
73

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

Amenities

National parks within ~60 mi
11
Nearest national park
Presidio of San Francisco (33 mi)
National parks include
Presidio of San Francisco, San Francisco Maritime National Historical Park, Fort Point National Historic Site
Airports within 30 mi
12
Nearest airport
San Carlos Airport (SQL) (14 mi)
Nearest major airport
San Carlos Airport (SQL) (14 mi)
Hospitals nearby (~15 mi)
53
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
Solar radiation rating
Fair (4.5 kWh/m²/day)

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

Housing stock

Median year housing built
1,972
Housing built before 1970
45.7%
Housing built 2000 or later
0.0%
Households with broadband internet
0.0%

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

Employment & development

Total county employment
390,970
Average weekly wage
$3,458
Top industries (by employment)
Professional Services, Information, Health Care
Annual residential building permits (county)
482

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

Area data compiled from public government, academic, and industry research feeds. Data sources →

Common questions

What is the natural-hazard risk in San Gregorio, CA?
Overall risk: Relatively High (FEMA NRI, county-level). Top hazards: coastalFlooding, drought, earthquake, inlandFlooding, landslide.
What is the wildfire risk in San Gregorio, CA?
Risk to homes is higher than 72% of US counties (USDA Forest Service Wildfire Risk to Communities, county-level).
What is the radon potential in San Gregorio, CA?
Moderate radon potential — EPA Zone 2 of 3, county-level. EPA recommends testing every home regardless of zone.
Are there Superfund sites near San Gregorio, CA?
No current or proposed National Priorities List sites within 5 miles (EPA).
What is the air quality in San Gregorio, CA?
Good. Median AQI: 27. (EPA AQI).
What is the cost of living in San Gregorio, CA?
Regional Price Parity: 110.7 (100 = US average) (High) (BEA RPP, metro/state-level).

ZIP code for San Gregorio

Selling a home in San Gregorio, 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