ZIP Codes in Fullerton, CA
Fullerton uses 4 ZIP codes, all in Orange County. Pick one below for details, or look up the full nine-digit ZIP+4 for a specific street address.
All 4 Fullerton ZIP codes
| ZIP | Type | County | Population |
|---|---|---|---|
| 92831 | standard | Orange | 35,618 |
| 92832 | standard | Orange | 27,298 |
| 92833 | standard | Orange | 51,842 |
| 92835 | standard | Orange | 26,005 |
Finding a ZIP+4 in Fullerton
Knowing which of these 4 ZIP codes covers an address only gets you partway. The four-digit extension identifies the specific delivery point — typically one side of one block. Two houses facing each other on the same Fullerton street almost always have different ZIP+4 codes even though they share all five leading digits.
Appending ZIP+4 to a mailing list?
Upload a CSV of Fullerton addresses and download it complete.