| Locality | Post Code |
|---|---|
| Bazile Mills, Knox | 68729 |
| Bloomfield, Knox | 68718 |
| Center, Knox | 68724 |
| Creighton, Knox | 68729 |
| Crofton, Knox | 68730 |
| Niobrara, Knox | 68760 |
| Orchard, Knox | 68764 |
| Spade, Knox | 68724 |
| Verdel, Knox | 68760 |
| Verdigre, Knox | 68783 |
| Wausa, Knox | 68786 |
| Winnetoon, Knox | 68789 |