| Zip Code | City | Population ↓ |
|---|---|---|
| 56201 | Willmar | 25,146 |
| 56273 | New London | 4,956 |
| 56288 | Spicer | 4,697 |
| 56209 | Atwater | 2,570 |
| 56282 | Raymond | 1,471 |
| 56279 | Pennock | 1,126 |
| 56251 | Kandiyohi | 949 |
| 56281 | Prinsburg | 786 |
| 56253 | Lake Lillian | 740 |
| 56289 | Sunburg | 599 |
| 56216 | Blomkest | 592 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 11 ZCTAs in Kandiyohi County, Minnesota (US Census).