| Zip Code | City | Population ↓ |
|---|---|---|
| 56649 | International Falls | 8,892 |
| 56653 | Littlefork | 1,243 |
| 56661 | Northome | 976 |
| 56660 | Mizpah | 306 |
| 56669 | Kabetogama | 261 |
| 56668 | Ranier | 213 |
| 56627 | Big Falls | 206 |
| 56629 | Birchdale | 191 |
| 55772 | Nett Lake | 103 |
| 56654 | Loman | 63 |
| 56658 | Margie | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 11 ZCTAs in Koochiching County, Minnesota (US Census).