| Locality | Post Code |
|---|---|
| Blue Spring, Trigg | 42211 |
| Blue Water Estates, Trigg | 42211 |
| Cadiz, Trigg | 42211 |
| Canton, Trigg | 42211 |
| Cerulean, Trigg | 42215 |
| Donaldson, Trigg | 42211 |
| Golden Pond, Trigg | 42211 |
| Gracey, Trigg | 42232 |
| Herndon, Trigg | 42236 |
| Ironton, Trigg | 42211 |
| Linton, Trigg | 42211 |
| Maggie, Trigg | 42211 |
| Maple Grove, Trigg | 42211 |
| Montgomery, Trigg | 42211 |
| Roaring Spring, Trigg | 42211 |
| Rockcastle, Trigg | 42211 |
| Trigg Furnace, Trigg | 42211 |