| Place | Post Code |
|---|---|
| Coggan, Mid-Western | 2849 |
| Collingwood, Mid-Western | 2850 |
| Cooks Gap, Mid-Western | 2850 |
| Cooyal, Mid-Western | 2850 |
| Cope, Mid-Western | 2852 |
| Coxs Creek, Mid-Western | 2849 |
| Coxs Crown, Mid-Western | 2849 |
| Cross Roads, Mid-Western | 2850 |
| Crudine, Mid-Western | 2795 |
| Cudgegong, Mid-Western | 2850 |
| Cullenbone, Mid-Western | 2850 |
| Cumbandry, Mid-Western | 2852 |
| Cumbo, Mid-Western | 2850 |
| Dabee, Mid-Western | 2849 |
| Dungeree, Mid-Western | 2849 |
| Erudgere, Mid-Western | 2850 |
| Eurunderee, Mid-Western | 2850 |
| Frog Rock, Mid-Western | 2850 |
| Galambine, Mid-Western | 2850 |
| Ginghi, Mid-Western | 2849 |
| Goolma, Mid-Western | 2852 |
| Grattai, Mid-Western | 2850 |
| Green Gully, Mid-Western | 2850 |
| Growee, Mid-Western | 2849 |
| Gulgong, Mid-Western | 2852 |
| Guntawang, Mid-Western | 2852 |