| Locality | Post Code |
|---|---|
| Barada, Richardson | 68355 |
| Dawson, Richardson | 68337 |
| Du Bois, Richardson | 68345 |
| Falls City, Richardson | 68355 |
| Humboldt, Richardson | 68376 |
| Preston, Richardson | 68355 |
| Rulo, Richardson | 68431 |
| Salem, Richardson | 68433 |
| Shubert, Richardson | 68437 |
| Stella, Richardson | 68442 |
| Verdon, Richardson | 68457 |