GB United Kingdom Major Regions Postal Code Details
๐๏ธ Denbighshire (sir Ddinbych) ยท Wales
LL20 8BW
Berwyn
LL21 9PW
Betws Gwerfil Goch
LL18 5YD
Bodelwyddan
LL16 4HU
Bodfari
LL15 2BW
Bontuchel
LL19 9ER
Bryn Newydd
LL21 9SB
Bryn Saith Marchog
LL21 9NA
Bryneglwys
CH7 5LF
Cadole
LL21 9BA
Carrog
LL17 0EY
Cefn
LL15 2NQ
Clawddnewydd
LL15 2AY
Clocaenog
LL21 9RS
Corwen
LL18 6HU
Cwm Dyserth
LL15 2EB
Cyffylliog
LL21 0NF
Cynwyd
LL16 4AW
Denbigh
LL21 9SN
Derwen
LL20 8EB
Dinbren
LL21 9NU
Druid
LL18 6DE
Dyserth
LL15 2LP
Efenechtyd
LL20 8EL
Eglwyseg
CH7 4DA
Eryrys
LL20 7BX
Fron Bache
LL15 2AR
Galltegfa
LL15 1RJ
Gellifor
LL22 9DG
Glascoed
LL21 9HN
Glyndyfrdwy
CH7 4QR
Graianrhyd
LL15 2TF
Graigadwywynt
LL15 2EY
Graigfechan
LL22 9DU
Groesffordd Marli
LL21 9DY
Gwyddelwern
LL16 4LL
Hendrerwydd
LL16 5BE
Henllan
LL15 2DT
Hiraethog
LL16 4SU
Lawnt
CH7 4DN
Llanarmon-Yn-Ial
LL15 1SU
Llanbedr Dyffryn Clwyd
LL15 1UY
Llanbedr Hall
LL11 3AH
Llandegla
LL21 0TG
Llandrillo
LL16 4HH
Llandyrnog
LL15 2HY
Llanelidan
LL15 2EN
Llanfair Dyffryn Clwyd
CH7 5SF
Llanferres
LL15 2AD
Llanfwrog
LL20 7PS
Llangollen
LL16 4LU
Llangwyfan
LL16 4LW
Llangynhafal
LL16 4NW
Llanrhaeadr
LL15 2YA
Llanrhydd
LL20 8BY
Llantysilio
LL15 1UE
Llanychan
LL16 4PA
Llanynys
LL21 9EP
Llidiart-Y-Parc
LL15 2LD
Llysfasi
CH7 5SB
Loggerheads
CH7 5LX
Maeshafn
LL21 9RL
Melin-Y-Wig
LL15 2PR
Nantclwyd
LL16 5RB
Nantglyn
LL16 4TT
Peniel
LL15 2SS
Pentre Celyn
LL15 2YE
Pentre Coch
LL20 8DH
Pentredwr
LL20 8EE
Pentrefelin
LL19 7LP
Prestatyn
LL16 4SD
Prion
LL15 1TN
Rhewl
LL17 0AW
Rhuallt
LL18 5UD
Rhuddlan
LL15 2ST
Rhyd-Y-Meudwy
LL18 2NA
Rhyl
LL17 0BG
Saint Asaph
LL17 0JL
Saint Asaph Business Park
LL16 4SP
Saron
LL16 5AG
Trefnant
LL17 0AT
Tremeirchion
LL17 0AN
Waen
LL16 4RN
Ystrad
๐ฎGB United Kingdom Regional Postal Code FAQ & Postal Regulations
๐ฎ What is the basic format of a UK postcode?
A UK postcode consists of 5-7 alphanumeric characters, split into two parts: the outward code (area and district) and inward code (specific street/building). Examples: SW1A 1AA (London) or M1 1AE (Manchester).
๐ How to find or validate a UK postcode?
Use Royal Mail's free Postcode Finder tool on their official website to search by address, or third-party APIs for validation.
โ ๏ธ What happens if I write a wrong postcode?
Incorrect postcodes may cause delays, returns, or lost mail. For important items, use Tracked services and double-check the recipient's postcode.
๐ฌ Is a postcode mandatory for UK mail?
Yes! Postcodes are essential. Mail without a postcode or with errors faces significant delivery issues. Always write the postcode on a separate line at the end of the address (e.g., London SW1A 1AA).