| Business | Phone |
| Encinal Station Post Office 526 W Fremont Ave, Sunnyvale 94087 | (408) 245-1783 |
| Plaza Station Post Office 141 S Taaffe St, Sunnyvale 94086 | (408) 738-0257 |
| Sunnyvale Post Office 580 N Mary Ave, Sunnyvale 94087 | (408) 732-1404 |
| Us Post Office 141 S Taaffe St, Sunnyvale 94086 | (408) 000-1111 |
| Us Post Office 526 W Fremont Ave, Sunnyvale 94087 | (408) 000-1111 |
| Us Post Office 580 N Mary Ave, Sunnyvale 94087 | (408) 000-1111 |