Districts in the LL area
| District | Main place | Local authority | Sectors | Postcodes |
|---|---|---|---|---|
| LL11 | Wrexham | Wrexham | 7 | 1,297 |
| LL12 | Wrexham | Wrexham | 4 | 889 |
| LL13 | Wrexham | Wrexham | 4 | 1,041 |
| LL14 | Rhosllannerchrugog | Wrexham | 6 | 1,047 |
| LL15 | Ruthin | Denbighshire | 3 | 457 |
| LL16 | Denbigh | Denbighshire | 4 | 651 |
| LL17 | St Asaph | Denbighshire | 1 | 235 |
| LL18 | Rhyl | Denbighshire | 7 | 1,223 |
| LL19 | Prestatyn | Denbighshire | 4 | 606 |
| LL20 | Llangollen | Denbighshire | 3 | 384 |
| LL21 | Corwen | Denbighshire | 2 | 368 |
| LL22 | Abergele | Conwy | 3 | 652 |
| LL23 | Y Bala | Gwynedd | 1 | 199 |
| LL24 | Penmachno | Conwy | 1 | 193 |
| LL25 | Dolwyddelan | Conwy | 1 | 47 |
| LL26 | Llanrwst | Conwy | 2 | 208 |
| LL27 | Trefriw | Conwy | 1 | 47 |
| LL28 | Colwyn Bay | Conwy | 2 | 448 |
| LL29 | Colwyn Bay | Conwy | 5 | 618 |
| LL30 | Llandudno | Conwy | 4 | 679 |
| LL31 | Conwy | Conwy | 1 | 281 |
| LL32 | Conwy | Conwy | 1 | 279 |
| LL33 | Llanfairfechan | Conwy | 1 | 167 |
| LL34 | Penmaenmawr | Conwy | 1 | 186 |
| LL35 | Aberdovey | Gwynedd | 1 | 99 |
| LL36 | Tywyn | Gwynedd | 2 | 246 |
| LL37 | Llwyngwril | Gwynedd | 1 | 40 |
| LL38 | Fairbourne | Gwynedd | 1 | 47 |
| LL39 | Arthog | Gwynedd | 1 | 19 |
| LL40 | Dolgellau | Gwynedd | 2 | 354 |
| LL41 | Blaenau Ffestiniog | Gwynedd | 3 | 376 |
| LL42 | Barmouth | Gwynedd | 1 | 151 |
| LL43 | Tal-y-bont | Gwynedd | 1 | 30 |
| LL44 | Dyffryn Ardudwy | Gwynedd | 1 | 52 |
| LL45 | Llanbedr | Gwynedd | 1 | 54 |
| LL46 | Harlech | Gwynedd | 1 | 94 |
| LL47 | Talsarnau | Gwynedd | 1 | 47 |
| LL48 | Penrhyndeudraeth | Gwynedd | 1 | 160 |
| LL49 | Porthmadog | Gwynedd | 1 | 194 |
| LL51 | Garndolbenmaen | Gwynedd | 1 | 45 |
| LL52 | Criccieth | Gwynedd | 1 | 160 |
| LL53 | Pwllheli | Gwynedd | 5 | 813 |
| LL54 | Penygroes | Gwynedd | 3 | 522 |
| LL55 | Caernarfon | Gwynedd | 5 | 741 |
| LL56 | Y Felinheli | Gwynedd | 1 | 74 |
| LL57 | Bangor | Gwynedd | 5 | 907 |
| LL58 | Beaumaris | Isle of Anglesey | 1 | 192 |
| LL59 | Menai Bridge | Isle of Anglesey | 1 | 201 |
| LL60 | Gaerwen | Isle of Anglesey | 1 | 111 |
| LL61 | Llanfair Pwllgwyngyll | Isle of Anglesey | 2 | 248 |
| LL62 | Llangristiolus | Isle of Anglesey | 1 | 119 |
| LL63 | Aberffraw | Isle of Anglesey | 1 | 105 |
| LL64 | Rhosneigr | Isle of Anglesey | 1 | 58 |
| LL65 | Holyhead | Isle of Anglesey | 4 | 923 |
| LL66 | Rhosgoch | Isle of Anglesey | 2 | 22 |
| LL67 | Cemaes | Isle of Anglesey | 1 | 61 |
| LL68 | Amlwch | Isle of Anglesey | 2 | 235 |
| LL69 | Penysarn | Isle of Anglesey | 1 | 35 |
| LL70 | Brynrefail | Isle of Anglesey | 1 | 20 |
| LL71 | Llanerchymedd | Isle of Anglesey | 2 | 86 |
| LL72 | Moelfre | Isle of Anglesey | 1 | 44 |
| LL73 | Marianglas | Isle of Anglesey | 1 | 13 |
| LL74 | Benllech | Isle of Anglesey | 1 | 80 |
| LL75 | Pentraeth | Isle of Anglesey | 2 | 60 |
| LL76 | Llanbedrgoch | Isle of Anglesey | 1 | 9 |
| LL77 | Llangefni | Isle of Anglesey | 3 | 253 |
| LL78 | Brynteg | Isle of Anglesey | 2 | 22 |