Fallbrook, CA ZIP Codes
Fallbrook, California has 2 ZIP codes: for street addresses and for PO boxes.
Mail addressed to Fallbrook covers nearby places too.
Where the 92028 ZIP code reaches
Tap or point to an area to see its ZIP code.Full-size map
92088 has no area on the map: it is a PO box or single-organization ZIP code. Dashed line: the Fallbrook Census outline.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
Check an address in Fallbrook
Street ranges from the Census Bureau, 2026. PO box and organization ZIP codes are not found by street. A new street may be missing: address not found?
Fallbrook PO box and business ZIP codes
| ZIP | Type and post office or station |
|---|---|
| 92028 | street delivery Fallbrook |
| 92088 | PO boxes at the Fallbrook post office Fallbrook |
Why your mail may say Fallbrook when you live outside it
Fallbrook ZIP codes also cover Rainbow, so a letter addressed to Fallbrook can go to a home outside the town.
A ZIP code does not set your city, school district or tax. San Diego County property records show which city you are in.
Fallbrook ZIP code questions
What is the main ZIP code for Fallbrook?
92028, the ZIP code of the main Fallbrook post office at 747 S Mission Rd.
Which Fallbrook ZIP codes are for PO boxes only?
92088. Mail to it goes to boxes at the post office, not to street addresses.
What county is Fallbrook in?
San Diego County.
ZIP codes for towns near Fallbrook
More towns near Fallbrook: Wildomar, Carlsbad, Escondido, Menifee, Lake Elsinore, Encinitas, San Clemente, San Juan Capistrano, Hemet.
Sources and last checked
USPS ZIP Locale Detail (October 1, 2026), GeoNames (CC BY 4.0), U.S. Census Bureau, HUD-USPS crosswalk.
Checked October 20, 2026. Sources · How we build our lists · Corrections