Portola Valley, CA ZIP code
The ZIP code for Portola Valley, California is 94028. It is in San Mateo County.
- Population in these ZIPs
- 6,531
- Avg. median income
- $250,000population-weighted
- Typical home value
- $4,331,200population-weighted
- Metro area
- San Francisco-Oakland-Fremont, CA
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Portola Valley, CA ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 94028 | 6,531 | $250,001 | $4,331,200 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Portola Valley
- Stanford 4 mi
- Menlo Park 4 mi
- Los Altos 5 mi
- Palo Alto 6 mi
- Atherton 6 mi
- Redwood City 6 mi
- La Honda 7 mi
- Mountain View 7 mi
- San Gregorio 8 mi
- Loma Mar 9 mi
- Cupertino 9 mi
- San Carlos 9 mi
Frequently asked questions
What is the ZIP code for Portola Valley, CA?
The ZIP code for Portola Valley, CA is 94028.
What county is Portola Valley, California in?
Portola Valley ZIP codes are in San Mateo County.