LL postcode area

The LL area holds 67 districts and 20,324 live postcodes; its largest place is Wrexham.

District	Live postcodes	Largest place with its centre there
LL11	1,297	Brymbo
LL12	889	Gresford
LL13	1,041	Wrexham
LL14	1,047	Rhosllannerchrugog
LL15	457	Ruthin
LL16	651	Denbigh
LL17	235	Saint Asaph
LL18	1,223	Rhyl
LL19	606	Prestatyn
LL20	384	Llangollen
LL21	368	Cynwyd
LL22	652	Abergele
LL23	199	Bala
LL24	193	Betws-y-Coed
LL25	47	—
LL26	208	Llanrwst
LL27	47	Trefriw
LL28	448	Llansantffraid Glan Conwy
LL29	618	Colwyn Bay
LL30	679	Llandudno
LL31	281	—
LL32	279	Conwy
LL33	167	Llanfairfechan
LL34	186	Penmaenmawr
LL35	99	Aberdyfi
LL36	246	Tywyn
LL37	40	Llwyngwril
LL38	47	Fairbourne
LL39	19	—
LL40	354	Dolgellau
LL41	376	Blaenau-Ffestiniog
LL42	151	Barmouth
LL43	30	Dyffryn Ardudwy
LL44	52	—
LL45	54	Llanbedr
LL46	94	Harlech
LL47	47	—
LL48	160	Penrhyndeudraeth
LL49	194	Porthmadog
LL51	45	Garndolbenmaen
LL52	160	Criccieth
LL53	813	Pwllheli
LL54	522	Penygroes
LL55	741	Caernarfon
LL56	74	Y Felinheli
LL57	907	Bangor
LL58	192	Beaumaris
LL59	201	Menai Bridge
LL60	111	Gaerwen
LL61	248	Llanfairpwllgwyngyll
LL62	119	Llangristiolus
LL63	105	Aberffraw
LL64	58	Rhosneigr
LL65	923	Holyhead
LL66	22	Rhosgoch
LL67	61	Cemaes Bay
LL68	235	Amlwch
LL69	35	Penysarn
LL70	20	Dulas
LL71	86	Llanerchymedd
LL72	44	Moelfre
LL73	13	Marianglas
LL74	80	Benllech
LL75	60	Pentraeth
LL76	9	Llanbedrgoch
LL77	253	Llangefni
LL78	22	Brynteg

Contains OS data © Crown copyright and database right 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Source: Office for National Statistics licensed under the Open Government Licence v3.0. Postcode data is the ONS Postcode Directory, August 2026 edition; counts are live postcodes with a usable location. Northern Ireland postcodes carry a separate licence and are not included; Scotland joins when the site's Scottish coverage does.