9 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 56728 | Hallock | 1,149 |
| 56732 | Karlstad | 978 |
| 56735 | Lancaster | 658 |
| 56734 | Lake Bronson | 615 |
| 56733 | Kennedy | 381 |
| 56731 | Humboldt | 126 |
| 56729 | Halma | 123 |
| 56755 | Saint Vincent | 75 |
| 56720 | Donaldson | 7 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 9 ZCTAs in Kittson County, Minnesota (US Census).