| Reference | post code | location 1 | location 2 | 
| CF46 70 |  | BEDLINOG POST OFFICE | TREHARRIS | 
| CF46 81 |  | WERN CRESCENT NELSON | TREHARRIS | 
| CF46 82 |  | HIGH STREET TRELEWIS | TREHARRIS | 
| CF46 83 |  | CARDIFF ROAD EDWARDSVILLE | TREHARRIS | 
| CF46 84 |  | CARDIFF ROAD GRAIGBETHLWYD | TREHARRIS | 
| CF46 85 |  | BLACKBROOK | TREHARRIS | 
| CF46 86 |  | EDWARDS TERRACE | TREHARRIS | 
| CF46 87 |  | CILHAUL | TREHARRIS | 
| CF46 88 |  | FFALDCAIACH | TREHARRIS | 
| CF46 90 |  | PENTWYN | TREHARRIS | 
| CF46 91 |  | TY LLWYD PARC | TREHARRIS | 
| CF46 92 |  | QUAKERS YARD POST OFFICE | TREHARRIS | 
| CF46 93 |  | QUAKERS STATION | TREHARRIS | 
| CF46 94 |  | SUSANNAH PLACE | TREHARRIS | 
| CF46 95 |  | TREHARRIS STATION | TREHARRIS | 
| CF46 97 |  | MAEN GILFACH | TREHARRIS | 
| CF46 100 |  | CWMFELIN | TREHARRIS | 
| CF46 101 |  | HYLTON TERRACE | TREHARRIS | 
| CF46 102 |  | LLWYNCRWM | TREHARRIS | 
| CF46 104 |  | ABERNANT | TREHARRIS | 
| CF46 105 |  | HEOL FAWR | TREHARRIS | 
| CF46 106 |  | HOLLYBUSH | TREHARRIS | 
| CF46 107 |  | HIGH STREET | TREHARRIS | 
| CF46 108 |  | LLANFABON | TREHARRIS | 
| CF46 109 |  | PENYBRYN | TREHARRIS | 
| CF46 258 |  | BRYNGERWN | TREHARRIS | 
| CF46 262 |  | PENLOCKS | TREHARRIS | 
| CF46 271 |  | EFAIL SHING | TREHARRIS | 
| CF46 276 |  | EDWARDS STREET | TREHARRIS | 
| CF46 294 |  | TREHARRIS POST OFFICE | TREHARRIS | 
Map boundaries are based on data from