Fountain Valley, CA ZIP Codes
Fountain Valley, California has 2 ZIP codes: for street addresses and for PO boxes.
Mail addressed to Fountain Valley covers nearby places too.
Where the 92708 ZIP code reaches
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92728 has no area on the map: it is a PO box or single-organization ZIP code. Dashed line: Fountain Valley city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
Check an address in Fountain Valley
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?
Fountain Valley PO box and business ZIP codes
| ZIP | Type and post office or station |
|---|---|
| 92708 | street delivery Fountain Valley |
| 92728 | PO boxes at the Fountain Valley post office Fountain Valley |
Fountain Valley ZIP code questions
What is the main ZIP code for Fountain Valley?
92708, the ZIP code of the main Fountain Valley post office at 17227 Newhope St.
Which Fountain Valley ZIP codes are for PO boxes only?
92728. Mail to it goes to boxes at the post office, not to street addresses.
What county is Fountain Valley in?
Orange County.
ZIP codes for towns near Fountain Valley
More towns near Fountain Valley: Orange, Newport Beach, Tustin, Cypress, Irvine, Buena Park, Fullerton, Cerritos, Placentia.
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