Palo Alto zipcode
| City | Palo Alto |
| ZIP Code | 94303 |
| Type | Standard |
| State Code | CA |
| State | California |
ZIP code of Palo Alto is 94303. This place is located in California state in US. To send any postal service to Palo Alto, you must use 94303 zipcode.
The ZIP code 94303 is also used with 2 more city names of California.
- E Palo Alto, CA
- East Palo Alto, CA