| Locality | Post Code |
|---|---|
| Alto Pass, Union | 62905 |
| Anna, Union | 62906 |
| Balcom, Union | 62906 |
| Cobden, Union | 62920 |
| Dongola, Union | 62926 |
| Jonesboro, Union | 62952 |
| Mill Creek, Union | 62961 |
| Reynoldsville, Union | 62952 |
| Saratoga, Union | 62906 |
| Ware, Union | 62952 |
| Wetaug, Union | 62926 |
| Wolf Lake, Union | 62998 |