Postal Codes

93255 ZIP Code

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ZIP code 93255 covers Onyx, California, with a population of about 739.

Population
7393 per square mile
Median age
57.719 points above the US average
Poverty rate
25.8%13.4 points above the US average
Typical home value
$244,236up 12.5% in five years
Degree or higher
27%8 points below the US average
Homeownership
85.1%20.1 points above the US average
Time zone
Pacific UTC-08:00observes daylight saving time

Where 93255 is

Onyx, California — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Population739
Median age57.7
Family households32.1%
Born outside the US7.6%
Speaks a language other than English at home15%
White (non-Hispanic)63.7%
Black (non-Hispanic)0%
Asian (non-Hispanic)7.7%
Hispanic or Latino15%
Veterans7.2%
Population by age
MaleFemale0-45-910-1415-1920-2425-3435-4445-5455-6465-7475-8485+
Income and poverty

American Community Survey 2019–2023 five-year estimates

Income per person$28,470
Poverty rate25.8%
Households on SNAP or cash assistance11%

Household income distribution

Under $10k0.0%
$10–15k0.0%
$15–20k7.6%
$20–25k14.9%
$25–30k17.2%
$30–35k0.0%
$35–40k19.3%
$40–45k0.0%
$45–50k0.0%
$50–60k13.8%
$60–75k6.0%
$75–100k10.2%
$100–125k0.0%
$125–150k0.0%
$150–200k11.0%
$200k or more0.0%

Income as declared to the IRS

Filed returns rather than survey responses, so this counts tax units and not households.

Tax returns filed190
Mean adjusted gross income$49,905
Returns declaring $200,000 or more0%
Returns, under $25k42.1%
Returns, $25k–$50k26.3%
Returns, $50k–$75k21.1%
Returns, $75k–$100k0.0%
Returns, $100k–$200k10.5%
Returns, $200k or more0.0%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$188,200
Owner-occupied85.1%
Vacant homes29.2%
Median year built1976

What the homes are

Detached house43.1%
20 or more units10.5%
Mobile home46.4%
Home values and rents today

Zillow Home Value Index and Zillow Observed Rent Index, courtesy of Zillow. Monthly and current, where the Census figures above are a five-year average and are capped at $2,000,000.

Typical home value$244,236as of 2026-07
Typical home value, 1 yeardown 0.2%
Typical home value, 5 yearsup 12.5%
Typical home value, 10 yearsup 88.4%
Typical home value since 2000
200020132026$244,686$39,780

$39,780 in 2000 to $244,236 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate24.4%
Bachelor's degree or higher27%
High school diploma or higher92.6%
Works from home0%
Drives to work alone22.3%
Takes public transport0%
Commutes 45 minutes or more35.4%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Obesity36.2% 2.8 pts above the national average of 33.4%
Diagnosed diabetes16.9% 4.9 pts above the national average of 12%
Currently smokes15.6% 2.4 pts above the national average of 13.2%
High blood pressure43.9% 9.8 pts above the national average of 34.1%
Fair or poor general health27.3% 7 pts above the national average of 20.3%
No health insurance (18–64)7.2% 4.1 pts below the national average of 11.3%
Depression25.2% 3.3 pts above the national average of 21.9%
No leisure-time physical activity28.9% 3.5 pts above the national average of 25.4%
Arthritis34.8% 9.7 pts above the national average of 25.1%
Binge drinking14% 2 pts below the national average of 16%
Taking blood pressure medication78.6% 3.9 pts above the national average of 74.7%
Cancer (non-skin)11.6% 3.9 pts above the national average of 7.7%
Current asthma11.5% 1.1 pts above the national average of 10.4%
Coronary heart disease10.8% 4.6 pts above the national average of 6.2%
Routine check-up in past year78.4% 1.7 pts above the national average of 76.7%
Cholesterol screening88% 2.1 pts above the national average of 85.9%
Cognitive disability16.6% 1.8 pts above the national average of 14.8%
Colorectal screening60.9% 3.4 pts below the national average of 64.3%
COPD11% 4.4 pts above the national average of 6.6%
Visited a dentist58.1% 3.2 pts below the national average of 61.3%
Any disability40.6% 9.9 pts above the national average of 30.7%
Lacks emotional support22.5% 2.3 pts below the national average of 24.8%
Food insecurity17.5% same as the national average of 17.1%
Received food stamps21.1% 6.8 pts above the national average of 14.3%
Hearing disability10.6% 3.9 pts above the national average of 6.7%
High cholesterol41.1% 4.9 pts above the national average of 36.2%
Housing insecurity13% 0.8 pts below the national average of 13.8%
Independent living disability11.8% 3.4 pts above the national average of 8.4%
Lacks transport10.1% 0.9 pts above the national average of 9.2%
Loneliness30.9% 3.5 pts below the national average of 34.4%
Mammography use69.9% 6 pts below the national average of 75.9%
Poor mental health (14+ days)18.3% 1.5 pts above the national average of 16.8%
Mobility disability23.5% 9.5 pts above the national average of 14%
Poor physical health (14+ days)18.4% 4.9 pts above the national average of 13.5%
Self-care disability6.5% 2.5 pts above the national average of 4%
Utility shut-off threat9% same as the national average of 8.8%
Sleeps under 7 hours35.6% 0.8 pts below the national average of 36.4%
Stroke5.6% 2.2 pts above the national average of 3.4%
All natural teeth lost13.8% 0.8 pts above the national average of 13%
Vision disability7.9% 2.3 pts above the national average of 5.6%
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Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 94.8% of US census tracts
FEMA ratingRelatively High
Expected annual loss91 out of 100
Community resilience2.9 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Landslide99.5Relatively High at its worst in this ZIP code
Wildfire98.9Relatively High at its worst in this ZIP code
River flooding98.5Very High at its worst in this ZIP code
Earthquake85.1Relatively Moderate at its worst in this ZIP code
Heat wave79.6Relatively Moderate at its worst in this ZIP code
Winter weather78Relatively Moderate at its worst in this ZIP code
Volcanic activity70.9Very Low at its worst in this ZIP code
Avalanche33.8Very Low at its worst in this ZIP code
Lightning29.1Relatively Low at its worst in this ZIP code
Hail28.4Very Low at its worst in this ZIP code
Strong wind13.6Very Low at its worst in this ZIP code
Tornado1.9Very Low at its worst in this ZIP code
Compared with California and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPCaliforniaUnited States
Median household income$96,334$78,538
Income per person$28,470$47,977$43,289
Poverty rate25.8%12%12.4%
Median home value$188,200$695,400$303,400
Median gross rent$1,956$1,348
Homeownership85.1%55.8%65%
Bachelor's degree or higher27%36.5%35%
Unemployment rate24.4%6.4%5.2%
Works from home0%15.5%13.5%
Born outside the US7.6%26.7%13.9%
Median age57.737.638.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationS LAKE FS, CA US24.3 km away

Average high and low by month

January59.1°F / 30.1°F
February61.7°F / 33.5°F
March66.6°F / 36.3°F
April72.8°F / 40.3°F
May82.4°F / 52°F
June92°F / 59.1°F
July98.1°F / 65.1°F
August97.7°F / 62.3°F
September91.4°F / 54.7°F
October80.5°F / 42.6°F
November68.7°F / 34.1°F
December58.1°F / 29.7°F
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarket100% of this ZIP code's area
Far from a supermarketNone of this ZIP code
No vehicle and far from a supermarket100% of this ZIP code's area
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

This ZIP code is served by 3 school districts, so the address decides which one, not the ZIP code.

Kern High School District41.5% of this ZIP code's land area
South Fork Union School District41.5% of this ZIP code's land area
Sierra Sands Unified School District17% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability70more vulnerable than 70% of US census tracts
Socioeconomic status65more vulnerable than 65% of US census tracts
Household characteristics26more vulnerable than 26% of US census tracts
Racial and ethnic minority status33more vulnerable than 33% of US census tracts
Housing type and transport94more vulnerable than 94% of US census tracts
Walkability6.1 out of 20Below average
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

93283 Weldon, CA17.8 km away
93527 Inyokern, CA22.1 km away
93238 Kernville, CA29 km away
93240 Lake Isabella, CA32.7 km away
93285 Wofford Heights, CA32.8 km away
93542 Little Lake, CA33 km away
93205 Bodfish, CA36.7 km away
93555 Ridgecrest, CA39 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

Kern County100% of this ZIP code's land area
Time zonePacific (UTC-08:00 standard)
Daylight saving timeObserved
Land area237.96 sq mi
Water area0.05 sq mi
Population density3 people per sq mi
Latitude, longitude35.6824, -118.0959

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

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