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City ZIP codes · California

Fullerton, CA ZIP Codes

8 ZIP codes use the postal name Fullerton, California (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 4 residential and 4 for PO boxes or a single organization. Median household income runs from $89,278 in 92831 to $143,817 in 92835, 1.6 times as much (Census Bureau, ACS 2020-2024). Fullerton's most populous ZIP code is 92833, with 51,842 people (ACS 2020-2024); 100% of its land is in the city of Fullerton.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Fullerton's ZIP codes?

92831: $89k median household income92832: $94k median household income92833: $114k median household income92835: $144k median household income9283592831928339283292831: $89k median household income92832: $94k median household income92833: $114k median household income92835: $144k median household income9283592831928339283292831: $89k median household income92832: $94k median household income92833: $114k median household income92835: $144k median household income92835928319283392832
The 4 residential ZIP codes named Fullerton, shaded by median household income in national fifths (ACS 2020-2024). Select a ZIP to open it. <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are Fullerton's ZIP codes?

The highest median household income is in 92835 ($143,817), the lowest in 92831 ($89,278). Home values run from $829,800 in 92832 to $1,052,500 in 92835.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013, B25077, B01003).

All 4 residential ZIP codes of Fullerton

Residential ZIP codes with the postal name Fullerton, CA, largest first (ACS 2020-2024); sort by any column
County
92833 Orange County 51,842 6,761 $114k $884k
92831 Orange County 35,618 5,987 $89k $877k
92832 Orange County 27,298 9,429 $94k $830k
92835 Orange County 26,005 4,546 $144k $1.05M

Download the 8 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; 2023 Gazetteer land areas (2020 ZCTAs); town names from simplemaps US ZIP Codes (CC BY 4.0) and GeoNames (CC BY 4.0).

PO Box and single-organization ZIP codes in Fullerton

4 ZIP codes named Fullerton have no residential delivery area: post office boxes, or one organization (a large employer, an agency, a university) with its own code. The Census Bureau publishes no figures for them.

Fullerton, CA: ZIP codes without a residential area, for PO boxes or one organization (GeoNames postal codes; USPS does not publish openly which is which)
ZIPCounty
92834Orange County
92836Orange County
92837Orange County
92838Orange County

Source: GeoNames postal codes (CC BY 4.0); a ZIP code with no Census ZCTA has no residential delivery area.

Which counties do Fullerton's ZIP codes reach?

Fullerton's residential ZIP codes lie in Orange County.

Which first three digits do Fullerton's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Fullerton starts with 928.

Three-digit prefixes of Fullerton's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Fullerton's
PrefixSectional centerHereAll codes
928 Anaheim, CA (SCF 928) 8 61

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.