| Business | Phone |
| Us Post Office 100 Admiral Callaghan Ln, Vallejo 94591 | (707) 000-1111 |
| Us Post Office 1015 Amador St, Vallejo 94590 | (707) 000-1111 |
| Us Post Office 485 Santa Clara St, Vallejo 94590 | (707) 000-1111 |
| Us Post Office 695 Walnut Ave, Vallejo 94592 | (707) 000-1111 |