Menlo Park, CA ZIP Codes
Menlo Park, California has 2 ZIP codes: for street addresses and for PO boxes.
Mail addressed to Menlo Park covers nearby places too.
Where the 94025 ZIP code reaches
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94026 has no area on the map: it is a PO box or single-organization ZIP code. Dashed line: Menlo Park city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
Check an address in Menlo Park
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?
Menlo Park PO box and business ZIP codes
| ZIP | Type and post office or station |
|---|---|
| 94025 | street delivery Menlo Park |
| 94026 | PO boxes at the Menlo Park post office Menlo Park |
ZIP codes from nearby towns that reach into Menlo Park
- 94303, mailing town Palo Alto, covers 4 percent of Menlo Park
Why your mail may say Menlo Park when you live outside it
Menlo Park ZIP codes also cover West Menlo Park and North Fair Oaks, so a letter addressed to Menlo Park can go to a home outside the city limits.
The reverse happens too: parts of Menlo Park use 94303, which mails under a neighboring town's name.
A ZIP code does not set your city, school district or tax. San Mateo County property records show which city you are in.
Menlo Park ZIP code questions
What is the main ZIP code for Menlo Park?
94025, the ZIP code of the main Menlo Park post office at 3875 Bohannon Dr.
Which Menlo Park ZIP codes are for PO boxes only?
94026. Mail to it goes to boxes at the post office, not to street addresses.
What county is Menlo Park in?
San Mateo County.
ZIP codes for towns near Menlo Park
More towns near Menlo Park: Sunnyvale, Hayward, San Mateo, Union City, Fremont, Cupertino, Santa Clara, Burlingame, Milpitas.
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