Costa Mesa, CA ZIP Codes
Costa Mesa, California has 3 ZIP codes: 2 for street addresses ( and ) and 1 for PO boxes ().
Your street decides which one you use.
Which Costa Mesa ZIP code is my address in?
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?
Costa Mesa ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
92628 has no area on the map: it is a PO box or single-organization ZIP code. Dashed line: Costa Mesa city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Costa Mesa ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 92626 | street delivery Costa Mesa |
| 92627 | street delivery Mesa Center |
| 92628 | PO boxes at the Costa Mesa post office Costa Mesa |
Costa Mesa ZIP code questions
What is the main ZIP code for Costa Mesa?
92626, the ZIP code of the main Costa Mesa post office at 1590 Adams Ave.
Which Costa Mesa ZIP codes are for PO boxes only?
92628. Mail to it goes to boxes at the post office, not to street addresses.
What county is Costa Mesa in?
Orange County.
ZIP codes for towns near Costa Mesa
More towns near Costa Mesa: Irvine, Garden Grove, Orange, Stanton, Aliso Viejo, Cypress, Laguna Hills, Lake Forest, Buena Park.
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