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zipcodes.pro — CITY/CA/ONYX

Onyx ZIP code, California

The ZIP code for Onyx, CA is 93255, and its area codes are 760 and 442.

USPS city name
1 ZIP code
Overlapping the city
1 more
Population
245
Area codes
760, 442

NANPA lists no telephone rate centre for Onyx itself, so these are the area codes of the nearest one, Weldon (12.5 miles). A town on an area-code boundary can differ from its neighbour.

Mail addressed to Onyx uses the ZIP code above. 1 more ZIP code covers part of the city but is addressed as somewhere else; they are listed separately below.

Onyx in numbers

About 245 people live in Onyx, in 127 households. The median household income is $24,297 a year, 75% below the California median of $99,122 (US: $80,734). The median age is 22.8; 0.0% of adults 25 and over hold a bachelor's degree or higher (37.1% across California).

Population245Onyx245
Households127Onyx127
Median age22.8Onyx22.8California37.9US 38.9
Median household income$24,297Onyx$24,297California$99,122US $80,734
Bachelor's degree or higher0.0%Onyx0.0%California37.1%US 35.7%
Population density21 / sq miOnyx21 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Onyx CDP. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Onyx

ZIP codes with the USPS city name Onyx
ZIP City Type Population Median income Median home
93255 Onyx , CA Standard 470 $24,583 —

Other ZIP codes overlapping Onyx

These ZIP codes cover part of Onyx but are addressed as somewhere else.

ZIP codes overlapping Onyx
ZIP City Type Population Median income Median home
93283 Weldon , CA Standard 2,326 $48,053 $180,600

Map of Onyx ZIP codes

93255

The ZIP codes of Onyx, CA, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Onyx

The nearest larger towns are Weldon (2,493 people, 4.9 mi), Mountain Mesa (600 people, 10 mi) and Squirrel Mountain Valley (1,108 people, 11 mi).

Towns near Onyx
TownPopulationDistance
Wofford Heights 2,656 14.1 mi
Lake Isabella 4,059 14.5 mi
China Lake Acres 2,594 25.9 mi

More nearby: every ZIP code in Kern County · California ZIP codes

Cite this page

zipcodes.pro. “Onyx, CA ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/ca/onyx

Underlying data is public domain or openly licensed — sources, vintages and licences.