Post Offices List in Lake County, Minnesota:
| Beaver Bay Post Office | 1014 Main St, Beaver Bay, MN 55601 |
| Finland Post Office | 6638 Highway 1, Finland, MN 55603 |
| Knife River Post Office | 200 Central Ave, Knife River, MN 55609 |
| Silver Bay Post Office | 13 Shopping Ctr, Silver Bay, MN 55614 |
| Two Harbors Post Office | 106 Waterfront Dr, Two Harbors, MN 55616 |