Atherton, CA ZIP code
The ZIP code for Atherton, California is 94027. It is in San Mateo County.
- Population in these ZIPs
- 7,002
- Avg. median income
- $250,000population-weighted
- Typical home value
- $8,728,600population-weighted
- Metro area
- San Francisco-Oakland-Fremont, CA
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Atherton, CA ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 94027 | 7,002 | $250,001 | $8,728,600 |
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 Atherton
- Stanford 3 mi
- Redwood City 3 mi
- Palo Alto 4 mi
- Menlo Park 4 mi
- San Carlos 5 mi
- Portola Valley 6 mi
- Belmont 7 mi
- Los Altos 8 mi
- Mountain View 8 mi
- San Mateo 9 mi
- Newark 10 mi
- Alviso 10 mi
Frequently asked questions
What is the ZIP code for Atherton, CA?
The ZIP code for Atherton, CA is 94027.
What county is Atherton, California in?
Atherton ZIP codes are in San Mateo County.