7 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 50616 | Charles City | 9,358 |
| 50458 | Nora Springs | 2,094 |
| 50468 | Rockford | 1,617 |
| 50471 | Rudd | 740 |
| 50435 | Floyd | 713 |
| 50653 | Marble Rock | 486 |
| 50620 | Colwell | 36 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 7 ZCTAs in Floyd County, Iowa (US Census).