| Localité | Code postal |
|---|---|
| Alta Vista, Howard | 50603 |
| Bonair, Howard | 52155 |
| Chester, Howard | 52134 |
| Cresco, Howard | 52136 |
| Elma, Howard | 50628 |
| Florenceville, Howard | 52136 |
| Kendallville, Howard | 52136 |
| Lime Springs, Howard | 52155 |
| Lourdes, Howard | 50628 |
| Protivin, Howard | 52163 |
| Riceville, Howard | 50466 |
| Saratoga, Howard | 52155 |
| Schley, Howard | 52136 |
| Vernon Springs, Howard | 52136 |