12 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 50613 | Cedar Falls | 43,680 |
| 50701 | Waterloo | 29,745 |
| 50702 | Waterloo | 21,197 |
| 50703 | Waterloo | 18,397 |
| 50707 | Evansdale | 7,407 |
| 50648 | Jesup | 4,120 |
| 50651 | La Porte City | 3,349 |
| 50643 | Hudson | 3,081 |
| 50626 | Dunkerton | 1,478 |
| 50667 | Raymond | 843 |
| 50634 | Gilbertville | 736 |
| 50623 | Dewar | 145 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 12 ZCTAs in Black Hawk County, Iowa (US Census).