7 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 50616 | Charles City | 9,419 |
| 50458 | Nora Springs | 2,242 |
| 50468 | Rockford | 1,615 |
| 50471 | Rudd | 786 |
| 50435 | Floyd | 764 |
| 50653 | Marble Rock | 448 |
| 50620 | Colwell | 54 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 7 ZCTAs in Floyd County, Iowa (US Census).