8 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 50588 | Storm Lake | 13,263 |
| 51002 | Alta | 2,819 |
| 50568 | Newell | 1,583 |
| 50585 | Sioux Rapids | 1,207 |
| 50510 | Albert City | 994 |
| 50565 | Marathon | 381 |
| 50576 | Rembrandt | 251 |
| 50592 | Truesdale | 141 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 8 ZCTAs in Buena Vista County, Iowa (US Census).