San Mateo, CA ZIP codes
San Mateo, California has 5 ZIP codes, including 1 PO Box ZIP. They are in San Mateo County.
- Population in these ZIPs
- 139,927
- Avg. median income
- $165,700population-weighted
- Typical home value
- $1,746,700population-weighted
- Metro area
- San Francisco-Oakland-Fremont, CA
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San Mateo, CA ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 94401 | San Mateo County | 35,295 | $122,227 | $1,204,300 |
| 94402 | San Mateo County | 25,475 | $172,522 | $2,455,200 |
| 94403 | San Mateo County | 43,276 | $174,917 | $1,809,000 |
| 94404 | San Mateo County | 35,881 | $192,332 | $1,702,000 |
| 94497 PO Box | San Mateo County | — | — | — |
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 San Mateo
- Belmont 3 mi
- Burlingame 4 mi
- San Carlos 4 mi
- Millbrae 6 mi
- Redwood City 7 mi
- Half Moon Bay 8 mi
- San Bruno 9 mi
- Atherton 9 mi
- Moss Beach 9 mi
- South San Francisco 9 mi
- El Granada 9 mi
- Menlo Park 10 mi
Frequently asked questions
What is the ZIP code for San Mateo, CA?
San Mateo, CA has 5 ZIP codes: 94401, 94402, 94403, 94404 and 94497.
What county is San Mateo, California in?
San Mateo ZIP codes are in San Mateo County.
Which San Mateo ZIP codes are PO Boxes?
94497 is a PO Box or single-organization ZIP code; it has no residential delivery area.