| Post Office Name | City/State | Address | Phone Number | Action |
|---|---|---|---|---|
| Downtown Ontario Post Office | Ontario, CA 91762 | 123 W Holt Blvd | 9099333837 | View Details Get Directions |
| Ontario Post Office | Ontario, CA 91761 | 1555 E Holt Blvd | 9099333837 | View Details Get Directions |
| Plaza Center Post Office | Ontario, CA 91762 | 1126 N Mountain Ave | 9099333837 | View Details Get Directions |
| Ontario Village Post Office | Ontario, CA 91762 | 1118 W Mission Blvd Ste D | 9093913700 | Get Directions |
| Mailbox in Post Office Lobby | Ontario, CA 91743 | 323 N Turner Ave | -- | Get Directions |
| Public Collection Box | Ontario, CA 91764 | 1871 E 4th St | -- | Get Directions |
| Public Collection Box | Ontario, CA 91761 | 1930 S Bon View Ave | -- | Get Directions |
| Public Collection Box | Ontario, CA 91761 | 2313 E Philadelphia St | -- | Get Directions |
| Public Collection Box | Ontario, CA 91761 | 2526 South Grove | -- | Get Directions |
| Public Collection Box | Ontario, CA 91761 | 2598 S Archibald Ave | -- | Get Directions |
| Public Collection Box | Ontario, CA 91764 | 3400 Inland Empire Blvd | -- | Get Directions |
| Public Collection Box | Ontario, CA 91761 | 3450 Centre Lake Dr | -- | Get Directions |
