| ZIP Code | ZIP Code Place Name | County | ZIP Code Type |
|---|---|---|---|
| 50510 | Albert City | Buena Vista County | Standard |
| 50554 | Laurens | Pocahontas County | Standard |
| 50565 | Marathon | Buena Vista County | Standard |
| 50568 | Newell | Buena Vista County | Standard |
| 50576 | Rembrandt | Buena Vista County | Standard |
| 50585 | Sioux Rapids | Clay County | Standard |
| 50588 | Storm Lake | Buena Vista County | Standard |
| 50592 | Truesdale | Buena Vista County | PO Box |
| 51002 | Alta | Buena Vista County | Standard |
| 51005 | Aurelia | Cherokee County | Standard |
| 51020 | Galva | Ida County | Standard |
| 51033 | Linn Grove | Buena Vista County | Standard |
| 51047 | Peterson | Clay County | Standard |
| 51366 | Webb | Clay County | Standard |