Palo Alto, California ZIP Codes
- ZIP records
4 - Sum of listed ZIP population estimates
96,570 - Counties represented
1 - Population range
5,000–46,879 per ZIP
Population sum includes positive estimates in these ZIP records; it is not an official city population.
Top ZIP Codes by Population
| Rank | ZIP Code | City | County | Population estimate |
|---|---|---|---|---|
| 1 | 94303 | Palo Alto | Santa Clara | 46,879 |
| 2 | 94306 | Palo Alto | Santa Clara | 27,183 |
| 3 | 94301 | Palo Alto | Santa Clara | 17,508 |
| 4 | 94304 | Palo Alto | Santa Clara | 5,000 |
Counties represented
All ZIP Codes in Palo Alto
- ZIP 94301 — Santa Clara County
- ZIP 94303 — Santa Clara County
- ZIP 94304 — Santa Clara County
- ZIP 94306 — Santa Clara County
Browse all ZIP data for California
Methodology: ZIP records are grouped by the source file's primary city and state fields. Population ranges and sums use positive ZIP-level estimates; sums should not be read as official city totals. County links use each record's listed county assignment.