| Reference |
post code |
location 1 |
location 2 |
| LL54 2 | | TANRALLT | LLANLLYFNI |
| LL54 4 | | CAPEL UCHA | PENRHIAU |
| LL54 7 | | NAZARETH POST OFFICE | |
| LL54 10 | | BRYNHYFRYD | NANTLLE ROAD, TALYSARN |
| LL54 12 | | BETWS GARMON BOX | |
| LL54 14 | | TAILON | CLYNNOGFAWR |
| LL54 17 | | BETHESDA BACH | LLANWNDA |
| LL54 18 | | DINAS LLANWNDA | |
| LL54 22 | | NEBO BOX | |
| LL54 23 | | TAI ELEN GLYN LLANDWROG | |
| LL54 27 | | LLANFAGLAN | EFAIL RHOS LLAN |
| LL54 30 | | MAES HYFRYD | CARMEL |
| LL54 34 | | RHOSISAF | RHOS ISAF |
| LL54 39 | | BRON HENDRE | |
| LL54 40 | | FFORDD RHEDYW | LLANLLYFNI |
| LL54 43 | | PONFFORDDELEN | GROESLON |
| LL54 44 | | MAESTRYFAN | |
| LL54 45 | | FFORDD LLWYNDU | PENYGROES |
| LL54 46 | | CARMEL | |
| LL54 47 | | BETWS GARMON | |
| LL54 48 | | DINAS DINLLE | |
| LL54 51 | | BRYN MAENOL | PENYGROES |
| LL54 52 | | PONT LLOC NEBO | |
| LL54 55 | | CLOGWYN MELYN | PENYGROES |
| LL54 57 | | BODFAN LLANDWROG | |
| LL54 58 | | PENYGROES POST OFFICE | |
| LL54 62 | | DOLYDD | |
| LL54 63 | | RHOSGADFAN | |
| LL54 64 | | RHES FICTORIA | NANTLLE |
| LL54 65 | | FFORDD YR ORSAF | PENYGROES |
| LL54 66 | | UPPER LLANDWROG POST OFFICE | |
| LL54 67 | | FFRWD LLANGWROG | |
| LL54 69 | | GROESLON YR EIFL | |
| LL54 71 | | FFORDD RHIWLAS | TALYSARN |
| LL54 72 | | TANAY GRAIG | CLYNNOG |
| LL54 73 | | GYRN GOCH | |
| LL54 74 | | LLANLLYFNI | |
| LL54 75 | | BRYN GWYN CARMEL | |
| LL54 76 | | SNOWDON RGR | |
| LL54 77 | | BRYNFFYNON | LLANAELHEARN |
| LL54 83 | | PANTYCELYN | PENYGROES |
| LL54 87 | | DOL ELLEN GROESLON | |
| LL54 89 | | Y FRON | |
| LL54 91 | | ABERDESACH | |
| LL54 92 | | GROESLON POST OFFICE | |
| LL54 95 | | BRYNAERAU | |
| LL54 97 | | TAL Y SARN POST OFFICE | |
| LL54 101 | | LLANDWROG POST OFFICE | |
| LL54 104 | | RHOSGADFAN | |
| LL54 105 | | FELIN GERRIG | PENYGROES |
| LL54 107 | | FFORDD HYFRYDLE | TALYSAR |
| LL54 108 | | PANTYRHEDYN | LLANDWROG |
| LL54 109 | | SWAN PONTLLYFNI | |
| LL54 116 | | CILGWYN | |
| LL54 119 | | CLYNNOG FAWR POST OFFICE | |
| LL54 124 | | BODADEN FFRWDCAEDU | |
| LL54 125 | | RHYD DDU | |
| LL54 127 | | CHATHAM LLANDWROG | |
| LL54 129 | | LLANAELHAEARN POST OFFICE | |
| LL54 130 | | MERDDYN CEUNANT | |
| LL54 133 | | Y GARTH | PONTLLYFNI |
| LL54 134 | | RHOSTRYFAN BOX | |
| LL54 135 | | NANTLLE | |
| LL54 137 | | LLANWNDA POST OFFICE | |
| LL54 140 | | BAY VIEW TREFOR | |
| LL54 141 | | TREFOR POST OFFICE | |
| LL54 143 | | ALLTYMOR | TREFOR |
| LL54 146 | | BRO SILYN | TALYSARN |
| LL54 149 | | PONTLLYFNI POST OFFICE | |
| LL54 150 | | MAESHYFRYD | |
| LL54 151 | | GLYNLLIFON | |
| LL54 153 | | BRO ARFON | CESEREA |
| LL54 159 | | GALLT Y SIL | |
| LL54 158 | LL54 2LJ | YR HENDRE POST OFFICE | CAERNARFON |
| LL54 79 | LL54 5UN | SARON | |
| LL54 166 | LL54 6NE | TREM YR WYDDFA | PEN Y GROES |
Map boundaries are based on data from