9 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 56728 | Hallock | 1,116 |
| 56732 | Karlstad | 951 |
| 56735 | Lancaster | 683 |
| 56734 | Lake Bronson | 601 |
| 56733 | Kennedy | 380 |
| 56731 | Humboldt | 137 |
| 56729 | Halma | 121 |
| 56755 | Saint Vincent | 82 |
| 56720 | Donaldson | 15 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 9 ZCTAs in Kittson County, Minnesota (US Census).