| Post Office Name | City/State | Address | Action |
|---|---|---|---|
| Downtown Ontario Post Office | Ontario, CA 91762 | 123 W Holt Blvd | View Details Get Directions |
| Ontario Post Office | Ontario, CA 91761 | 1555 E Holt Blvd | View Details Get Directions |
| Plaza Center Post Office | Ontario, CA 91762 | 1126 N Mountain Ave | View Details Get Directions |
| Ontario Village Post Office | Ontario, CA 91762 | 1118 W Mission Blvd Ste D | 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 |
