92833 ZIP Code: Fullerton, California
ZIP code 92833 covers Fullerton, California. It sits in Orange County. Fullerton is covered by 8 ZIP codes in total, so 92833 is one delivery area within it rather than the whole city. A ZIP code is a US Postal Service mail route, not a boundary on a map, so it describes where post is delivered rather than an administrative area.
| ZIP code | 92833 |
|---|---|
| Place | Fullerton |
| State | California (CA) |
| County or equivalent | Orange County |
| ZIP codes covering Fullerton | 8 |
| Phone area codes in California | 37 |
| Country | United States |
Phone area codes in California
ZIP codes and area codes are separate systems drawn for different purposes, so no ZIP code maps to exactly one area code. These are every geographic code used across California.
ZIP codes near 92833
- 92837 Fullertonabout 1 mile
- 92832 Fullertonabout 2 miles
- 92838 Fullertonabout 2 miles
- 90621 Buena Parkabout 2 miles
- 92850 Anaheimabout 2 miles
- 92801 Anaheimabout 2 miles
- 92809 Anaheimabout 3 miles
- 90632 La Habraabout 3 miles
Distances are straight-line, between the approximate centres of each delivery area.
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Frequently asked questions
Where is ZIP code 92833?
ZIP code 92833 is in Fullerton, California, in Orange County. ZIP codes are mail delivery routes rather than mapped regions, so the code identifies a set of addresses the Postal Service serves together, not a district with fixed borders.
What county is 92833 in?
92833 is in Orange County, California. A single ZIP code can straddle a county line, because mail routes were drawn for delivery efficiency and take no notice of county boundaries, so the county shown is the one the code is primarily associated with.
What area code goes with ZIP code 92833?
ZIP codes and telephone area codes are separate systems with different boundaries, so no ZIP code maps to exactly one area code. California uses 37 geographic area codes: 209, 213, 279, 310, 323, 341, 369, 408, 415, 424, 442, 510, 530, 559, 562, 619, 626, 627, 628, 650, 657, 661, 669, 707, 714, 747, 760, 805, 818, 820, 831, 858, 909, 916, 925, 949 and 951.
How many ZIP codes does Fullerton have?
Fullerton, California has 8 ZIP codes in this dataset, of which 92833 is one. Large cities are split across many codes so mail can be sorted by district, and the codes are usually numerically close to each other.
Is 92833 a real ZIP code?
Yes. 92833 appears in the GeoNames postal-code dataset as an active US code assigned to Fullerton, California. Codes that have been retired or never issued do not appear, which is why entering one on this site returns a not-found page rather than a blank record.
Why do ZIP code boundaries look odd on maps?
Because they are not boundaries. A ZIP code is a collection of mail routes, and a route is a line a carrier walks or drives, not an area. Any ZIP code map you have seen is somebody's approximation drawn around the addresses in a code, which is also why two ZIP code maps rarely agree with each other.
Can two addresses in the same ZIP code be in different cities?
Yes, routinely. The Postal Service assigns a preferred city name to each code for addressing purposes, and that name often covers several neighbouring towns, unincorporated areas or a whole postal district. The place shown here is the one the source names for the code, not a claim that every address in it is inside that town's limits.
ZIP code, place, county and location data from GeoNames, used under CC BY 4.0, extracted 2026-08-22. ZIP codes are Postal Service delivery routes, not administrative areas, so a code can cross city and county lines and the place name shown is the one the source records for the code. Coordinates are an approximate centre of the delivery area, not a precise location. Population and time zone are not shown because the source does not publish them.