| Business | Phone |
| Hamilton Station Post Office 380 Hamilton Ave, Palo Alto 94301 | (650) 323-2650 |
| Us Post Office 380 Hamilton Ave, Palo Alto 94301 | (650) 000-1111 |
| Cambridge Post Office 265 Cambridge Ave, Palo Alto 94306 | (650) 327-1581 |
| East Palo Alto Post Office 1600 Bay Rd, Palo Alto 94303 | (650) 328-0570 |
| Palo Alto Post Office 2085 E Bayshore Rd, Palo Alto 94303 | (650) 321-1423 |
| Us Post Office 2085 E Bayshore Rd, Palo Alto 94303 | (650) 000-1111 |
| Us Post Office 265 Cambridge Ave, Palo Alto 94306 | (650) 000-1111 |