| Locality | Post Code |
|---|---|
| Billsburg, Haakon | 57553 |
| Capa, Haakon | 57552 |
| England Ranch, Haakon | 57552 |
| Hartley, Haakon | 57553 |
| Hilland, Haakon | 57567 |
| Kirley, Haakon | 57552 |
| Midland, Haakon | 57552 |
| Milesville, Haakon | 57553 |
| Moenville, Haakon | 57552 |
| Nowlin, Haakon | 57552 |
| Ottumwa, Haakon | 57552 |
| Philip, Haakon | 57567 |
| Plum Creek, Haakon | 57567 |
| Stamford, Haakon | 57552 |