| Locality | Post Code |
|---|---|
| Ammon, Dinwiddie | 23822 |
| Carson, Dinwiddie | 23830 |
| Church Road, Dinwiddie | 23833 |
| Dewitt, Dinwiddie | 23840 |
| Dinwiddie, Dinwiddie | 23841 |
| Ford, Dinwiddie | 23850 |
| McKenney, Dinwiddie | 23872 |
| North Dinwiddie, Dinwiddie | 23803, 23805 |
| Sutherland, Dinwiddie | 23885 |
| Wilsons, Dinwiddie | 23894 |