| Locality | Post Code |
|---|---|
| Avoca, Otoe | 68307 |
| Burr, Otoe | 68324 |
| Cook, Otoe | 68329 |
| Douglas, Otoe | 68344 |
| Dunbar, Otoe | 68346 |
| Eagle, Otoe | 68347 |
| Lorton, Otoe | 68382 |
| Nebraska City, Otoe | 68410 |
| Otoe, Otoe | 68417 |
| Palmyra, Otoe | 68418 |
| Paul, Otoe | 68410 |
| Syracuse, Otoe | 68446 |
| Talmage, Otoe | 68448 |
| Unadilla, Otoe | 68454 |
| Union, Otoe | 68455 |
| Wyoming, Otoe | 68410 |