Los Altos, CA ZIP Codes
Los Altos, California has 3 ZIP codes: 2 for street addresses ( and ) and 1 for PO boxes ().
Your street decides which one you use.
Which Los Altos 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?
Los Altos ZIP code map
Tap or point to an area to see its ZIP code.Full-size map
94023 has no area on the map: it is a PO box or single-organization ZIP code. Dashed line: Los Altos city limits.
Map: Census Bureau ZIP Code Tabulation Areas (2020) and place limits (2024).
All Los Altos ZIP codes by type
| ZIP | Type and post office or station |
|---|---|
| 94022 | street delivery Loyola Corners |
| 94023 | PO boxes at the Los Altos post office Los Altos |
| 94024 | street delivery Loyola Corners |
Why your mail may say Los Altos when you live outside it
Los Altos ZIP codes also cover Los Altos Hills, Palo Alto and Loyola, so a letter addressed to Los Altos can go to a home outside the city limits.
A ZIP code does not set your city, school district or tax. Santa Clara County property records show which city you are in.
Los Altos ZIP code questions
What is the main ZIP code for Los Altos?
94022, the ZIP code of the main Loyola Corners post office at 1525 Miramonte Ave.
Which Los Altos ZIP codes are for PO boxes only?
94023. Mail to it goes to boxes at the post office, not to street addresses.
What county is Los Altos in?
Santa Clara County.
ZIP codes for towns near Los Altos
More towns near Los Altos: Menlo Park, Campbell, Newark, Redwood City, Milpitas, Fremont, Los Gatos, Foster City, San Jose.
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