| Post Office | Allendale |
| Division | Allendale |
| Pincode | 29810 |
| Post Office | Fairfax |
| Division | Allendale |
| Pincode | 29827 |
| Post Office | Ulmer |
| Division | Allendale |
| Pincode | 29849 |
| Post Office | Martin |
| Division | Allendale |
| Pincode | 29836 |
| Post Office | Sycamore |
| Division | Allendale |
| Pincode | 29846 |