Onyx, CA demographics:
population, income, and more

Total population
245
-57.3% year-over-year change
Median household income
$24,297/yr
-11.5% year-over-year change
Housing units
204
-50.0% year-over-year change

Onyx population

How many people live in Onyx

Onyx is home to 245 residents, according to the most recent Census data. Gender-wise, 20.4% of Onyx locals are male, and 79.6% are female.

Total population
245
-57.3% year-over-year change
Gender ratio
Male
20.4%
50
Female
79.6%
195
Value Percent YoY change
Male 50 20.4% -74.6%
Female 195 79.6% -48.3%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

Adults between 25 and 44 make up 20.4% of the population, while another 7.8% fall into the 45 to 64 bracket. Finally, around 11.8% are 65 or older.

Median age
22.8
Age breakdown
Under 15
0%
15 to 24
60%
25 to 44
20.4%
45 to 64
7.8%
Over 65
11.8%
Value Percent YoY change
15 to 24 147 60% -12.5%
25 to 44 50 20.4% 19.1%
45 to 64 19 7.8% -89.5%
Over 65 29 11.8% -84.2%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

At the same time, 20% of residents are non-citizens. There’s also a share of 40% that includes residents with two or more races.

Citizenship
U.S.-born citizens
80%
Non-U.S.-born citizens
0%
Non-citizens
20%
Value Percent YoY change
U.S.-born citizens 196 80% -62.2%
Non-citizens 49 20% -12.5%
Racial breakdown
White
0%
Black or African American
0%
American Indian and Alaska Native
0%
Asian
19.6%
Native Hawaiian and other Pacific Islander
0%
Two or more races
40%
Other
40.4%
Value Percent
Asian 48 19.6%
Two or more races 98 40%
Other 99 40.4%

Households in Onyx

A peek inside Onyx households

Onyx has 127 households, with an average of 2 members in each. Of these, 39.4% are families, while the remaining 60.6% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
127
-58.0% year-over-year change
Average people per household
2
Non-family households
77
Family households
50
Value Percent YoY change
Non-family households 77 60.6% -70.4%
Family households 50 39.4% 19.1%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Onyx

The housing landscape of Onyx

Onyx's housing consists of 204 units, with 48.5% being detached single-family homes ideal for those wanting space. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 27.9% of the housing landscape.

Housing units
204
-50.0% year-over-year change
Housing types
Value Percent
1 unit, detached 99 48.5%
50 or more units 48 23.5%
Mobile home 57 27.9%
Homes built since 2020
0
% year-over-year change

The age of buildings in Onyx

In Onyx, the median construction year is 1973. Most development happened in the second half of the 20th century.

Construction year breakdown by decade
Value Percent YoY change
Built between 1960 and 1969 79 38.7% -16.8%
Built between 1970 and 1979 77 37.8% -67.0%
Built between 1980 and 1989 48 23.5% -15.8%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Onyx occupancy rates

Out of the 127 occupied housing units in Onyx, 62.2% are owner-occupied, while 37.8% are lived in by tenants. Meanwhile, 37.7% of all homes on the local market sit vacant.

Occupied housing units
127
-58.0% year-over-year change
Occupancy breakdown
Renter occupied
48
Owner occupied
79
Value Percent YoY
change
Renter occupied 48 37.8% -15.8%
Owner occupied 79 62.2% -67.8%
Unoccupied housing units
37.7%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Education in Onyx

Onyx education at a glance

About 60.8% of the population in Onyx went to high school, while 19.6% pursued college studies.

Education level
Value Percent YoY change
High school diploma 149 60.8% -51.0%
College diploma 48 19.6% -64.7%
Associate degree 48 19.6% -15.8%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Onyx

How much people earn in Onyx

The average annual household income in Onyx was $23,711 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a -32% change from the previous year. At the same time, the median income stood at $24,297, reflecting a -11.5% shift over the same period.

Average household income in Onyx
$23,711/year
-31.9% year-over-year change
Median household income in Onyx
$24,297/year
-11.5% year-over-year change

Onyx income by age

Overall, 60.4% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Above poverty level
148
Below poverty level
97
Value Percent YoY
change
Above poverty level 148 60.4% -61.4%
Below poverty level 97 39.6% -49.2%

Employment in Onyx

Workforce and job types in Onyx

The job market in Onyx is powered by 69 working residents, spread across a range of industries and roles.

Workforce demographics

Working population
69
-17.9% year-over-year change
White collar
69
Blue collar
0
Value Percent YoY change
White collar 69 100% -17.9%
Employer type
Self employees
0%
Private companies
0%
Governmental workers
27.5%
Not for profit companies
72.5%
Value Percent YoY change
Governmental workers 19 27.5% -34.5%
Not for profit companies 50 72.5% -9.1%
Unemployment rate
42.0%
19.1% year-over-year change

Available workforce

The unemployment rate in Onyx stands at 42%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Onyx

How people get around in Onyx

Means of transportation
Value Percent YoY change
Car 19 27.5% -34.5%
Motorcycle 50 72.5% -9.1%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Onyx by zipcode?

Zipcode Population Number of households Median income Average income
93255 470 214 $24,583 $41,680

Explore more communities

FAQs about Onyx demographics 

What is the total population of Onyx?

Onyx has a total population of 245 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by -57.3% compared to a year ago.

What is the gender ratio in Onyx?

The gender ratio in Onyx is as follows:
  • 20.4% males (50 residents)
  • 79.6% females (195 residents)

What is the median age in Onyx?

The median age in Onyx is 22.8.

What is the age distribution of the population in Onyx?

The age distribution in Onyx is as follows:
  • Under 15: 0% (0 residents)
  • Ages 15-24: 60% (147 residents)
  • Ages 25-44: 20.4% (50 residents)
  • Ages 45-64: 7.8% (19 residents)
  • Over 65: 11.8% (29 residents)

What is the racial and ethnic makeup of Onyx?

The racial and ethnic makeup of Onyx is as follows:
  • White: 0% (0 residents)
  • Black or African American: 0% (0 residents)
  • American Indian and Alaska Native: 0% (0 residents)
  • Asian: 19.6% (48 residents)
  • Native Hawaiian and Other Pacific Islander: 0% (0 residents)
  • Two or More Races: 40% (98 residents)
  • Other: 40.4% (99 residents)

What percentage of the population in Onyx are U.S.-born citizens?

U.S.-born citizens represent 80% of the population in Onyx.

How many housing units are there in Onyx?

There are 204 housing units in Onyx, reflecting a -50.0% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Onyx and what is the average household size?

Onyx has a total of 127 households, with an average of 2 people in each.

What is the median household income in Onyx?

Onyx has a median household income of $24,297, representing a -11.5% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Onyx?

The employment rate is 58% in Onyx, with a workforce of 69 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 100% (69 residents)
  • Blue-collar workers: 0% (0 residents)

Places of employment:
  • Self-employed: 0% (0 residents)
  • Private companies: 0% (0 residents)
  • Governmental workers: 27.5% (19 residents)
  • Not-for-profit companies: 72.5% (50 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025