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Area data

Onyx, CA — ZIP 93255

Population: 470 (Census ACS)

The median home value in ZIP 93255 (Onyx, CA) is $244,236 — down 0.2% over the past year. FEMA's National Risk Index rates the county's overall natural-hazard risk Relatively High, with drought, earthquake, heatwave 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

$244,236

Median home value

-0.2%

1-year change

Relatively High

Hazard risk (county)

Home values & appreciation

Median home value
$244,236
1-year appreciation
-0.2%
3-year appreciation
+6.8%
5-year appreciation
+12.5%
10-year appreciation
+88.4%
All-time peak (2026-04)
$248,330
House Price Index (state)
417.4 (-0.8% YoY)

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

Market activity

For-sale inventory
9
1-year forecast
+0.7%

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

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)

Natural hazards & flood risk

Overall hazard risk (county)
Relatively High
Top hazards (county)
drought, earthquake, heatWave, inlandFlooding, landslide
Notable hazard ratings (county)
drought: Relatively High · earthquake: Relatively High · hail: Relatively Low · heatWave: Relatively High · inlandFlooding: Relatively High · landslide: Relatively High
Wildfire risk to homes (county)
Higher than 95% of US counties
Buildings in wildfire direct-exposure zone
21.1%
Radon potential (county)
Moderate radon potential — EPA Zone 2 of 3
EPA Superfund (NPL) sites within 5 mi
None
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)

Annual precipitation
6.6 in
USDA plant hardiness zone
9a (extreme annual low 20 to 25°F)

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

Air quality

Air quality rating
Moderate
Median AQI (annual)
69
Days with Good air quality
85
Days with Moderate air quality
210
Days with Unhealthy air quality
12
Highest AQI recorded (year)
174

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

Amenities

National parks within ~60 mi
1
Nearest national park
César E. Chávez National Monument (43 mi)
Airports within 30 mi
19
Nearest airport
Inyokern Airport (IYK) (9 mi)
Nearest major airport
China Lake Naws (Armitage Field) Airport (17 mi)
Hospitals nearby (~15 mi)
1,090
Hospitals include
MIZELL MEMORIAL HOSPITAL, CRENSHAW COMMUNITY HOSPITAL, CRENSHAW COMMUNITY HOSPITAL
Avg hospital rating (CMS)
3.1 / 5
Best hospital rating nearby (CMS)
5.0 / 5
Solar radiation rating
Excellent (5.8 kWh/m²/day)

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

Migration

Net migration (county)
-1,496 tax filers

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

Housing stock

Median year housing built
1,976
Housing built before 1970
33.0%
Housing built 2000 or later
24.1%
Median annual property tax
$2,163
Households with broadband internet
46.3%

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

Employment & development

Total county employment
274,649
Average weekly wage
$1,029
Top industries (by employment)
Agriculture, Health Care, Accommodation & Food
Annual residential building permits (county)
2,021

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

How it compares

ZIP 93255State medianUS median
Median home value$244,236$702,573$289,727
Median annual property tax$2,163$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 ZIP 93255?
$244,236.
What is the natural-hazard risk in ZIP 93255?
Overall risk: Relatively High (FEMA NRI, county-level). Top hazards: drought, earthquake, heatWave, inlandFlooding, landslide.
What is the wildfire risk in ZIP 93255?
Risk to homes is higher than 95% of US counties (USDA Forest Service Wildfire Risk to Communities, county-level).
What is the radon potential in ZIP 93255?
Moderate radon potential — EPA Zone 2 of 3, county-level. EPA recommends testing every home regardless of zone.
Are there Superfund sites near ZIP 93255?
No current or proposed National Priorities List sites within 5 miles (EPA).
What is the air quality in ZIP 93255?
Moderate. Median AQI: 69. (EPA AQI).
What is the cost of living in ZIP 93255?
Regional Price Parity: 113.3 (100 = US average) (High) (BEA RPP, metro/state-level).

Nearby ZIP codes

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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