Postal reference / United States
94023Los Altos, California
ZIP code 94023 is a United States postal code for Los Altos, California. Its county association is Santa Clara County. The map reference point is at 37.3852, -122.1141.
- State / territory
- California
- Recorded place name
- Los Altos
- County association
- Santa Clara
- Estimated coordinate
- 37.3852, -122.1141
View on OpenStreetMap - ZIP prefix
- 940 · 45 ZIP codes share it
- Data source
- GeoNames postal reference, snapshot September 26, 2026
GeoNames reference data. County associations may not include every intersecting county, place names are postal names rather than legal boundaries, and coordinates are approximate. This is not address validation.
Need the last four digits?
ZIP+4 depends on the full delivery address. A five-digit code alone cannot determine its extension.
Find ZIP+4Explore California
Browse the other 2,592 ZIP codes recorded for California, sorted by code with place and county.
California directoryOther ZIP codes in Los Altos, CA
Los Altos has 3 ZIP codes in the reference dataset.
Nearby ZIP code reference points
| ZIP code | Place | State | County association | Miles |
|---|---|---|---|---|
| 94022 | Los Altos | CA | Santa Clara | 0.7 |
| 94040 | Mountain View | CA | Santa Clara | 1.4 |
| 94035 | Mountain View | CA | Santa Clara | 1.7 |
| 94039 | Mountain View | CA | Santa Clara | 1.7 |
| 94042 | Mountain View | CA | Santa Clara | 1.7 |
| 94041 | Mountain View | CA | Santa Clara | 2.0 |
| 94306 | Palo Alto | CA | Santa Clara | 2.4 |
| 94043 | Mountain View | CA | Santa Clara | 2.5 |
Straight-line distance between reference points. Nearby points do not prove that ZIP areas touch.
Verify a mailing address
For mailing, confirm the complete street or PO Box address with USPS. A place record does not confirm delivery eligibility or the ZIP+4 extension.
Open USPS address lookup