Onyx ZIP Codes — Kern County, CA

There is one unique ZIP code in Onyx, California and it is 93255. Area code: 559.

ZIP codes

237.96

sq mi land

0.05

sq mi water

559

area code

Onyx, CA ZIP code map

About Onyx, CA

Onyx is a small, unincorporated community located in California's Kern County. Nestled in the southern part of the state, it provides a unique blend of rural charm and accessibility to nearby urban areas. With its expansive land and natural beauty, Onyx offers residents and visitors a glimpse of California's diverse landscape.

Location & geography

Onyx is situated approximately 30 miles northeast of Bakersfield, a major city in California, and about 20 miles southwest of Lake Isabella, a popular recreational area. The community itself spans a land area of 237.96 square miles, with a minor water area of 0.05 square miles. The terrain is characterized by its arid climate and rolling hills, typical of the Central Valley region.

Community & economy

The community of Onyx embodies a close-knit, rural lifestyle where residents often engage in outdoor and agricultural activities. The local economy primarily revolves around agriculture and tourism, with visitors drawn to the natural beauty and recreational opportunities in the surrounding areas. Daily life in Onyx reflects a slower pace, allowing residents to enjoy the scenic landscapes and a tight community atmosphere.

Transportation

Onyx is accessible via several highways, most notably Highway 178, which connects the area to neighboring cities and attractions. The nearest major airport is Meadows Field Airport in Bakersfield, located about 30 miles to the southwest. Due to its rural setting, public transit options are limited, and personal vehicles are the primary mode of transportation.

History

Onyx was established as part of the westward expansion in California and has a rich history tied to agriculture and settlement in the region. The community developed alongside the growth of the surrounding Kern County, which is known for its farming and mineral extraction industries. Notable events in Onyx's history are often linked to the expansion of agricultural practices and the influx of settlers seeking opportunity in the late 19th and early 20th centuries.

Did you know?

One surprising fact about Onyx is its vast land area relative to its population, as it primarily serves as a rural community rather than a densely populated urban center. Additionally, Onyx is known for its proximity to Lake Isabella, which is a popular destination for boating, fishing, and camping.

ZIP codes for Onyx, CA (1)

ZIP code	City	County	Map
93255	Onyx	Kern	View map

Demographics & statistics

872

Population

58.0

Median age

$29,974

Median household income

$23,224

Per capita income

$134,000

Median home value

Median monthly rent

88.8%

Home ownership

20.5%

Poverty rate

31.7%

Unemployment

521

Housing units

18.0%

Bachelor's or higher

Age distribution

Male Female

20–24

25–34

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	0	0.0%
18 and over	872	100.0%
65 and over	318	36.5%
Median age	58.0 years

Race & ethnicity

White 65.3%

Hispanic or Latino 10.2%

Other race 10.2%

Two or more races 9.5%

Asian 4.8%

Group	Count	%
White	634	65.3%
Hispanic or Latino	99	10.2%
Other race	99	10.2%
Two or more races	92	9.5%
Asian	47	4.8%

Household income

$15k–$25k 35.3%

$25k–$35k 28.4%

$50k–$75k 16.5%

$75k–$100k 12.6%

$150k–$200k 7.2%

Range	% of households
$15k–$25k	35.3%
$25k–$35k	28.4%
$50k–$75k	16.5%
$75k–$100k	12.6%
$150k–$200k	7.2%
Median income	$29,974

Housing

Home values

Under $50k 17.5%

$50k–$100k 27.7%

$100k–$150k 13.4%

$150k–$200k 15.3%

$200k–$300k 12.9%

$300k–$500k 8.1%

$1M+ 5.1%

Housing overview

Metric	Value
Median home value	$134,000
Median rent / month	$0
Owner occupied	88.8%
Renter occupied	11.2%
Vacant	26.2%
Single-family detached	39.8%
Large apartment buildings	8.3%
Mobile homes	51.9%
Median rooms	5.7
Avg household size (owned)	1.95

Year built

Era	%
2020 or later	0.0%
2010–2019	0.0%
2000–2009	5.3%
1990–1999	8.5%
1980–1989	16.7%
1970–1979	48.9%
1960–1969	13.9%
1950–1959	0.0%
1940–1949	3.3%
1939 or earlier	3.3%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	26.4%
2 bedrooms	32.2%
3 bedrooms	32.9%
4 bedrooms	8.5%
5+ bedrooms	0.0%

Vehicles per household

Vehicles	% of households
No vehicle	9.1%
1 vehicle	18.9%
2 vehicles	45.6%
3 or more	26.5%

Heating fuel

Fuel type	%
Electricity	48.2%
Propane / LP gas	20.3%
Wood	31.5%

Households & families

Household type	Count	%
Married-couple family	112	26.7%
Cohabiting couple	69	16.5%
Male householder, no spouse	115	27.4%
Female householder, no spouse	123	29.4%
Households with children under 18	0	0.0%
Households with seniors (65+)	184	43.9%
Average household size	2.08

Marital status

Status	Male	Female
Never married	19.3%	50.5%
Married	27.6%	24.6%
Separated	0.0%	4.1%
Widowed	24.2%	4.1%
Divorced	28.9%	16.6%

Education

Less than 9th grade 0.0%

Some HS, no diploma 9.0%

HS graduate 47.2%

Some college, no degree 25.8%

Associate's degree 0.0%

Bachelor's degree 13.4%

Graduate / professional 4.7%

Metric	%
HS diploma or higher	91.0%
Bachelor's or higher	18.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	0	0.0%
Kindergarten	0	0.0%
Elementary school	0	0.0%
High school	50	51.5%
College / grad school	47	48.5%

Employment

Industry of employment

Education & healthcare 77.1%

Agriculture & mining 22.9%

Occupation

Category	%
Management, business & arts	22.9%
Service	22.1%
Sales & office	55.0%
Natural resources & construction	0.0%
Production & transportation	0.0%

Employment type

Type	%
Private sector	57.9%
Government	19.3%
Self-employed	22.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	41.4%
Carpool	22.9%
Public transit	0.0%
Walk	0.0%
Other means	35.7%
Avg commute (minutes)	0.0

Poverty

All people 20.5%

Under 18 years 0.0%

18 and over 20.5%

Married-couple families 0.0%

Female-led households 0.0%

Income support

Source	% of households
Social Security	73.0%
Retirement income	34.8%
Supplemental Security	37.7%
Cash public assistance	0.0%
Food stamps / SNAP	24.1%

Health indicators

Condition	%
High blood pressure	42.7%
High cholesterol	41.6%
Heart disease	11.6%
Stroke	5.6%
Asthma	11.2%
Arthritis	35.6%
Kidney disease	4.9%
Pulmonary disease	13.6%
Cancer	9.8%

Behavior / access	%
Binge drinking	13.4%
No physical activity	26.7%
Less than 7 hrs sleep	32.7%
Fair or poor health	23.2%
Poor mental health	15.5%
Poor physical health	16.6%
No health insurance	9.8%
Visited doctor (checkup)	75.5%
Visited dentist	58.8%
Cholesterol screening	93.5%
Teeth loss	17.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	146	16.7%

Disability	%
Any disability	47.8%
Under 18	0.0%
18–64 years	45.1%
65 and over	52.5%

Health insurance coverage

Type	%
Private insurance	31.7%
Public insurance	81.4%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	872	100.0%
Spanish	49	5.6%
Other Indo-European	49	5.6%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	823	94.4%
Born in same state	823	94.4%
Born in different state	564	64.7%
Foreign born	0	0.0%
Naturalized citizen	49	5.6%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Arab	219	25.1%
French	81	9.3%

Ancestry	Count	%
Italian	64	7.3%
English	30	3.4%

Technology access

Metric	% of households
Computer access	48.1%
Internet access	83.5%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What ZIP codes does Onyx, CA have?

Onyx, CA has one ZIP code: 93255. Each ZIP code serves a distinct delivery area within the city and surrounding region.