| Business | Phone |
| U S Post Office 4825 Bond Ave, East St Louis 62207 | (618) 874-3736 |
| U S Post Office 801 Range Ln, East St Louis 62206 | (618) 332-3571 |
| U S Post Office 750 Missouri Ave, East St Louis 62201 | (618) 875-0202 |
| U S Post Office 8701 State St, East St Louis 62203 | (618) 398-3594 |
| U S Post Office 950 Missouri Ave, East St Louis 62201 | (618) 875-0200 |
| U S Post Office 6110 Forest Blvd, East St Louis 62204 | (618) 874-3826 |