| Business | Phone |
| Us Post Office 6320 Passons Blvd, Pico Rivera 90660 | (562) 000-1111 |
| Us Post Office 9160 Whittier Blvd, Pico Rivera 90660 | (562) 000-1111 |
| Us Post Office 9240 Slauson Ave, Pico Rivera 90660 | (562) 000-1111 |
| Us Post Office 9320 Slauson Ave, Pico Rivera 90660 | (562) 949-0493 |