Post Offices List in Kittson County, Minnesota:
| Donaldson Post Office | 110 Commercial St Ste 103, Donaldson, MN 56720 |
| Hallock Post Office | 105 S Birch Ave, Hallock, MN 56728 |
| Humboldt Post Office | 301 Main St, Humboldt, MN 56731 |
| Karlstad Post Office | 107 Main St S, Karlstad, MN 56732 |
| Kennedy Post Office | 510 Atlantic Ave, Kennedy, MN 56733 |
| Lake Bronson Post Office | 101 N 1st Ave, Lake Bronson, MN 56734 |
| Lancaster Post Office | 113 Central Ave S, Lancaster, MN 56735 |