Foster City zip code
Zip code in Foster City, CA
The location Foster City belongs to San Mateo County, state of California. Foster City has been assigned with the zip code 94404.
The location name Foster City is listed as acceptable by the US Postal Service so it can be used in your mailings just fine. You can also use any of the following names: Foster City.| Zip code | Type | Population |
|---|---|---|
| 94404 | STANDARD | 34,310 |
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