| Locality | Post Code |
|---|---|
| Bevington, Madison | 50033 |
| Conger, Madison | 50240 |
| Cumming, Madison | 50061 |
| Dexter, Madison | 50070 |
| Earlham, Madison | 50072 |
| East Peru, Madison | 50222 |
| Hanley, Madison | 50240 |
| Lorimor, Madison | 50149 |
| Macksburg, Madison | 50155 |
| Patterson, Madison | 50218 |
| Peru, Madison | 50222 |
| Pitzer, Madison | 50072 |
| Prole, Madison | 50229 |
| Saint Charles, Madison | 50240 |
| Truro, Madison | 50257 |
| Van Meter, Madison | 50261 |
| Wick, Madison | 50240 |
| Winterset, Madison | 50273 |