7 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 50616 | Charles City | 9,544 |
| 50458 | Nora Springs | 2,297 |
| 50468 | Rockford | 1,553 |
| 50435 | Floyd | 687 |
| 50471 | Rudd | 680 |
| 50653 | Marble Rock | 504 |
| 50620 | Colwell | 55 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 7 ZCTAs in Floyd County, Iowa (US Census).