Hayward, CA ZIP Codes
Hayward, California has 8 ZIP codes: 5 for street addresses (, , , and ) and 3 for PO boxes (, and ).
Your street decides which one you use.
Which Hayward 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?
Hayward ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
94540, 94543 and 94557 have no area on the map: they are PO box or single-organization ZIP codes. Dashed line: Hayward city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Hayward ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 94540 | PO boxes at the Hayward Sorting and Delivery Center post office Hayward Sorting and Delivery Center |
| 94541 | street delivery Hayward Sorting and Delivery Center |
| 94542 | street delivery Hayward Sorting and Delivery Center |
| 94543 | PO boxes at the Bradford post office Bradford |
| 94544 | street delivery Hayward Sorting and Delivery Center |
| 94545 | street delivery Hayward Sorting and Delivery Center |
| 94557 | PO boxes at the Mount Eden post office Mount Eden |
| 94587 | street delivery; mail may be addressed to Union City Alvarado |
ZIP codes from nearby towns that reach into Hayward
- 94552, mailing town Castro Valley, covers 5 percent of Hayward
- 94586, mailing town Sunol, covers 3 percent of Hayward
- 94588, mailing town Pleasanton, covers 3 percent of Hayward
Why your mail may say Hayward when you live outside it
Hayward ZIP codes also cover Union City, Fairview and Cherryland, so a letter addressed to Hayward can go to a home outside the city limits.
The reverse happens too: parts of Hayward use 94552, 94586 and 94588, which mail under a neighboring town's name.
A ZIP code does not set your city, school district or tax. Alameda County property records show which city you are in.
Hayward ZIP code questions
What is the main ZIP code for Hayward?
94541, the ZIP code of the main Hayward Sorting and Delivery Center post office at 24438 Santa Clara St.
Which Hayward ZIP codes are for PO boxes only?
94540, 94543 and 94557. Mail to them goes to boxes at the post office, not to street addresses.
What county is Hayward in?
Alameda County.
ZIP codes for towns near Hayward
More towns near Hayward: Menlo Park, Alameda, Oakland, San Mateo, Pleasanton, Fremont, Dublin, San Ramon, Burlingame.
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