Post Offices List in Lake Oswego City, Oregon:
| Lake Grove Post Office | 15875 Boones Ferry Rd, Lake Oswego, OR 97035 |
| Lake Oswego Post Office | 501 4th St, Lake Oswego, OR 97034 |
| Lake Grove Post Office | 15875 Boones Ferry Rd, Lake Oswego, OR 97035 |
| Lake Oswego Post Office | 501 4th St, Lake Oswego, OR 97034 |