GB United Kingdom Major Regions Postal Code Details
🏛️ Gwynedd · Wales
SY20 9AFAber Cywarch
Aber Cywarch gwynedd wales SY20 9AF United Kingdom
SY20 9ABAberangell
Aberangell gwynedd wales SY20 9AB United Kingdom
LL53 8BDAberdaron
Aberdaron gwynedd wales LL53 8BD United Kingdom
LL54 5BPAberdesach
Aberdesach gwynedd wales LL54 5BP United Kingdom
LL35 0NBAberdovey
Aberdovey gwynedd wales LL35 0NB United Kingdom
LL53 5YHAbererch
Abererch gwynedd wales LL53 5YH United Kingdom
LL40 2PGAbergeirw
Abergeirw gwynedd wales LL40 2PG United Kingdom
LL33 0HFAbergwyngregyn
Abergwyngregyn gwynedd wales LL33 0HF United Kingdom
LL36 9YHAbergynolwyn
Abergynolwyn gwynedd wales LL36 9YH United Kingdom
SY20 9RXAberllefenni
Aberllefenni gwynedd wales SY20 9RX United Kingdom
LL53 7HXAbersoch
Abersoch gwynedd wales LL53 7HX United Kingdom
LL53 6TZAfonwen
Afonwen gwynedd wales LL53 6TZ United Kingdom
LL53 8BTAnelog
Anelog gwynedd wales LL53 8BT United Kingdom
LL23 7PAArenig
Arenig gwynedd wales LL23 7PA United Kingdom
LL39 1YSArthog
Arthog gwynedd wales LL39 1YS United Kingdom
LL23 7BHBala
Bala gwynedd wales LL23 7BH United Kingdom
LL57 4UBBangor
Bangor gwynedd wales LL57 4UB United Kingdom
LL53 8DEBardsey Island
Bardsey Island gwynedd wales LL53 8DE United Kingdom
LL42 1DTBarmouth
Barmouth gwynedd wales LL42 1DT United Kingdom
LL41 4BACae Clyd
Cae Clyd gwynedd wales LL41 4BA United Kingdom
LL55 2TACaeathro
Caeathro gwynedd wales LL55 2TA United Kingdom
LL57 4UGCaerhun
Caerhun gwynedd wales LL57 4UG United Kingdom
LL55 1AGCaernarfon
Caernarfon gwynedd wales LL55 1AG United Kingdom
LL23 7NYCapel Celyn
Capel Celyn gwynedd wales LL23 7NY United Kingdom
LL54 5DHCapel Uchaf
Capel Uchaf gwynedd wales LL54 5DH United Kingdom
LL57 2SQCapel Y Graig
Capel Y Graig gwynedd wales LL57 2SQ United Kingdom
LL54 7AACarmel
Carmel gwynedd wales LL54 7AA United Kingdom
LL57 3BLCarneddi
Carneddi gwynedd wales LL57 3BL United Kingdom
LL23 7LLCefn Ddwysarn
Cefn Ddwysarn gwynedd wales LL23 7LL United Kingdom
LL53 8UHCeidio
Ceidio gwynedd wales LL53 8UH United Kingdom
LL51 9EXCennin
Cennin gwynedd wales LL51 9EX United Kingdom
LL55 4RNCeunant
Ceunant gwynedd wales LL55 4RN United Kingdom
LL53 6NQChwilog
Chwilog gwynedd wales LL53 6NQ United Kingdom
LL53 7DDCilan
Cilan gwynedd wales LL53 7DD United Kingdom
LL54 7SFCilgwyn
Cilgwyn gwynedd wales LL54 7SF United Kingdom
LL55 3DPClwt-Y-Bont
Clwt-Y-Bont gwynedd wales LL55 3DP United Kingdom
LL54 5NRClynnogfawr
Clynnogfawr gwynedd wales LL54 5NR United Kingdom
LL57 4YUCoed Y Parc
Coed Y Parc gwynedd wales LL57 4YU United Kingdom
SY20 9TGCorris
Corris gwynedd wales SY20 9TG United Kingdom
LL52 0LACriccieth
Criccieth gwynedd wales LL52 0LA United Kingdom
LL55 3EADeiniolen
Deiniolen gwynedd wales LL55 3EA United Kingdom
LL54 7YWDinas
Dinas gwynedd wales LL54 7YW United Kingdom
LL54 5TWDinas Dinlle
Dinas Dinlle gwynedd wales LL54 5TW United Kingdom
SY20 9JQDinas Mawddwy
Dinas Mawddwy gwynedd wales SY20 9JQ United Kingdom
LL55 3EHDinorwic
Dinorwic gwynedd wales LL55 3EH United Kingdom
LL40 1BSDolgellau
Dolgellau gwynedd wales LL40 1BS United Kingdom
LL54 7EFDolydd
Dolydd gwynedd wales LL54 7EF United Kingdom
LL40 2BEDrws Y Nant
Drws Y Nant gwynedd wales LL40 2BE United Kingdom
LL44 2BPDyffryn Ardudwy
Dyffryn Ardudwy gwynedd wales LL44 2BP United Kingdom
LL53 6JBEdern
Edern gwynedd wales LL53 6JB United Kingdom
LL53 5TNEfailnewydd
Efailnewydd gwynedd wales LL53 5TN United Kingdom
LL55 3HDFachwen
Fachwen gwynedd wales LL55 3HD United Kingdom
LL38 2DJFairbourne
Fairbourne gwynedd wales LL38 2DJ United Kingdom
LL41 4NSFfestiniog
Ffestiniog gwynedd wales LL41 4NS United Kingdom
LL38 2SQFriog
Friog gwynedd wales LL38 2SQ United Kingdom
LL23 7NSFron Goch
Fron Goch gwynedd wales LL23 7NS United Kingdom
LL41 3DJFucheswen
Fucheswen gwynedd wales LL41 3DJ United Kingdom
LL55 3EFGallt Y Foel
Gallt Y Foel gwynedd wales LL55 3EF United Kingdom
LL40 2LEGanllwyd
Ganllwyd gwynedd wales LL40 2LE United Kingdom
LL51 9RXGarndolbenmaen
Garndolbenmaen gwynedd wales LL51 9RX United Kingdom
LL53 8TGGarnfadryn
Garnfadryn gwynedd wales LL53 8TG United Kingdom
LL41 4EDGellilydan
Gellilydan gwynedd wales LL41 4ED United Kingdom
LL57 3UDGerlan
Gerlan gwynedd wales LL57 3UD United Kingdom
LL21 0NWGlanrafon
Glanrafon gwynedd wales LL21 0NW United Kingdom
LL41 3NPGlanypwll
Glanypwll gwynedd wales LL41 3NP United Kingdom
LL57 4URGlasinfryn
Glasinfryn gwynedd wales LL57 4UR United Kingdom
LL51 9YUGolan
Golan gwynedd wales LL51 9YU United Kingdom
LL55 1TUGriffiths Crossing
Griffiths Crossing gwynedd wales LL55 1TU United Kingdom
LL54 7SYGroeslon
Groeslon gwynedd wales LL54 7SY United Kingdom
LL54 5PLGyrn Goch
Gyrn Goch gwynedd wales LL54 5PL United Kingdom
LL57 4ADHalfway Bridge
Halfway Bridge gwynedd wales LL57 4AD United Kingdom
LL46 2TUHarlech
Harlech gwynedd wales LL46 2TU United Kingdom
LL40 1TWIslawrdref
Islawrdref gwynedd wales LL40 1TW United Kingdom
LL42 1AZLlanaber
Llanaber gwynedd wales LL42 1AZ United Kingdom
LL54 5AFLlanaelhaearn
Llanaelhaearn gwynedd wales LL54 5AF United Kingdom
LL53 6PULlanarmon
Llanarmon gwynedd wales LL53 6PU United Kingdom
LL45 2LULlanbedr
Llanbedr gwynedd wales LL45 2LU United Kingdom
LL53 7RPLlanbedrog
Llanbedrog gwynedd wales LL53 7RP United Kingdom
LL55 4SNLlanberis
Llanberis gwynedd wales LL55 4SN United Kingdom
LL46 2SBLlandanwg
Llandanwg gwynedd wales LL46 2SB United Kingdom
LL55 3AGLlanddeiniolen
Llanddeiniolen gwynedd wales LL55 3AG United Kingdom
LL23 7PYLlandderfel
Llandderfel gwynedd wales LL23 7PY United Kingdom
LL47 6YYLlandecwyn
Llandecwyn gwynedd wales LL47 6YY United Kingdom
LL54 5LLLlandwrog
Llandwrog gwynedd wales LL54 5LL United Kingdom
LL57 4YHLlandygai
Llandygai gwynedd wales LL57 4YH United Kingdom
LL36 9SHLlanegryn
Llanegryn gwynedd wales LL36 9SH United Kingdom
LL40 2HFLlanelltyd
Llanelltyd gwynedd wales LL40 2HF United Kingdom
LL53 7LHLlanengan
Llanengan gwynedd wales LL53 7LH United Kingdom
LL40 2PDLlanfachreth
Llanfachreth gwynedd wales LL40 2PD United Kingdom
LL54 5RBLlanfaglan
Llanfaglan gwynedd wales LL54 5RB United Kingdom
LL46 2RYLlanfair
Llanfair gwynedd wales LL46 2RY United Kingdom
LL36 9TWLlanfihangel Y Pennant
Llanfihangel Y Pennant gwynedd wales LL36 9TW United Kingdom
LL23 7DPLlanfor
Llanfor gwynedd wales LL23 7DP United Kingdom
LL48 6LZLlanfrothen
Llanfrothen gwynedd wales LL48 6LZ United Kingdom
LL53 7LPLlangian
Llangian gwynedd wales LL53 7LP United Kingdom
LL23 7BTLlangower
Llangower gwynedd wales LL23 7BT United Kingdom
LL53 8PALlangwnadl
Llangwnadl gwynedd wales LL53 8PA United Kingdom
LL53 6SSLlangybi
Llangybi gwynedd wales LL53 6SS United Kingdom
LL53 8TFLlaniestyn
Llaniestyn gwynedd wales LL53 8TF United Kingdom
LL57 3HTLlanllechid
Llanllechid gwynedd wales LL57 3HT United Kingdom
LL54 6DJLlanllyfni
Llanllyfni gwynedd wales LL54 6DJ United Kingdom
LL53 6DWLlannor
Llannor gwynedd wales LL53 6DW United Kingdom
LL55 3BELlanrug
Llanrug gwynedd wales LL55 3BE United Kingdom
LL41 4HSMaentwrog
Maentwrog gwynedd wales LL41 4HS United Kingdom
LL23 7SFMaes Y Waen
Maes Y Waen gwynedd wales LL23 7SF United Kingdom
LL57 1LQMaesgeirchen
Maesgeirchen gwynedd wales LL57 1LQ United Kingdom
SY20 9ENMallwyd
Mallwyd gwynedd wales SY20 9EN United Kingdom
LL41 4BHManod
Manod gwynedd wales LL41 4BH United Kingdom
LL48 6EPMinffordd
Minffordd gwynedd wales LL48 6EP United Kingdom
LL49 9YUMorfa Bychan
Morfa Bychan gwynedd wales LL49 9YU United Kingdom
LL53 6ATMorfa Nefyn
Morfa Nefyn gwynedd wales LL53 6AT United Kingdom
LL57 4FFMynydd Llandygai
Mynydd Llandygai gwynedd wales LL57 4FF United Kingdom
LL53 6TNMynydd Nefyn
Mynydd Nefyn gwynedd wales LL53 6TN United Kingdom
LL53 7SFMynytho
Mynytho gwynedd wales LL53 7SF United Kingdom
LL53 8PRNanhoron
Nanhoron gwynedd wales LL53 8PR United Kingdom
LL57 3LJNant Ffrancon
Nant Ffrancon gwynedd wales LL57 3LJ United Kingdom
LL55 4NWNant Gwynant
Nant Gwynant gwynedd wales LL55 4NW United Kingdom
LL55 4UFNant Peris
Nant Peris gwynedd wales LL55 4UF United Kingdom
LL54 6BLNantlle
Nantlle gwynedd wales LL54 6BL United Kingdom
LL55 4YNNantmor
Nantmor gwynedd wales LL55 4YN United Kingdom
LL54 6DWNasareth
Nasareth gwynedd wales LL54 6DW United Kingdom
LL54 6DNNebo
Nebo gwynedd wales LL54 6DN United Kingdom
LL53 6ERNefyn
Nefyn gwynedd wales LL53 6ER United Kingdom
LL41 4PPPant Llwyd
Pant Llwyd gwynedd wales LL41 4PP United Kingdom
LL51 9DXPantglas
Pantglas gwynedd wales LL51 9DX United Kingdom
SY20 9ARPantperthog
Pantperthog gwynedd wales SY20 9AR United Kingdom
LL23 7YUParc
Parc gwynedd wales LL23 7YU United Kingdom
LL53 6RBPencaenewydd
Pencaenewydd gwynedd wales LL53 6RB United Kingdom
LL53 8ESPengroeslon
Pengroeslon gwynedd wales LL53 8ES United Kingdom
LL55 3BPPenisarwaun
Penisarwaun gwynedd wales LL55 3BP United Kingdom
LL40 1YFPenmaenpool
Penmaenpool gwynedd wales LL40 1YF United Kingdom
LL49 9SFPenmorfa
Penmorfa gwynedd wales LL49 9SF United Kingdom
SY20 9DSPennal
Pennal gwynedd wales SY20 9DS United Kingdom
LL53 5UBPenrallt
Penrallt gwynedd wales LL53 5UB United Kingdom
LL53 7HLPenrhos
Penrhos gwynedd wales LL53 7HL United Kingdom
LL57 2NNPenrhosgarnedd
Penrhosgarnedd gwynedd wales LL57 2NN United Kingdom
LL57 4HWPenrhyn Park
Penrhyn Park gwynedd wales LL57 4HW United Kingdom
LL48 6ANPenrhyndeudraeth
Penrhyndeudraeth gwynedd wales LL48 6AN United Kingdom
LL57 4UYPentir
Pentir gwynedd wales LL57 4UY United Kingdom
LL55 4UBPentre Castell
Pentre Castell gwynedd wales LL55 4UB United Kingdom
LL53 8EQPentre Uchaf
Pentre Uchaf gwynedd wales LL53 8EQ United Kingdom
LL52 0PEPentrefelin
Pentrefelin gwynedd wales LL52 0PE United Kingdom
LL54 6PPPenygroes
Penygroes gwynedd wales LL54 6PP United Kingdom
LL53 6EYPistyll
Pistyll gwynedd wales LL53 6EY United Kingdom
LL53 6TUPlas Gwyn
Plas Gwyn gwynedd wales LL53 6TU United Kingdom
LL54 5EGPontllyfni
Pontllyfni gwynedd wales LL54 5EG United Kingdom
LL55 1UAPontrug
Pontrug gwynedd wales LL55 1UA United Kingdom
LL49 9NFPorthmadog
Porthmadog gwynedd wales LL49 9NF United Kingdom
LL49 9SSPrenteg
Prenteg gwynedd wales LL49 9SS United Kingdom
LL53 5EEPwllheli
Pwllheli gwynedd wales LL53 5EE United Kingdom
LL57 3EJRachub
Rachub gwynedd wales LL57 3EJ United Kingdom
LL53 8AFRhiw
Rhiw gwynedd wales LL53 8AF United Kingdom
LL41 3LBRhiwbryfdir
Rhiwbryfdir gwynedd wales LL41 3LB United Kingdom
LL57 4UARhiwlas
Rhiwlas gwynedd wales LL57 4UA United Kingdom
LL55 2BGRhosbodrual
Rhosbodrual gwynedd wales LL55 2BG United Kingdom
LL54 7HSRhosgadfan
Rhosgadfan gwynedd wales LL54 7HS United Kingdom
LL53 8HURhoshirwaun
Rhoshirwaun gwynedd wales LL53 8HU United Kingdom
LL52 0NFRhoslan
Rhoslan gwynedd wales LL52 0NF United Kingdom
LL36 9LTRhoslefain
Rhoslefain gwynedd wales LL36 9LT United Kingdom
LL54 7NYRhostryfan
Rhostryfan gwynedd wales LL54 7NY United Kingdom
LL23 7EYRhosygwalia
Rhosygwalia gwynedd wales LL23 7EY United Kingdom
LL48 6DJRhyd
Rhyd gwynedd wales LL48 6DJ United Kingdom
LL54 6TFRhyd Ddu
Rhyd Ddu gwynedd wales LL54 6TF United Kingdom
LL23 7SERhyd Uchaf
Rhyd Uchaf gwynedd wales LL23 7SE United Kingdom
LL41 4NTRhyd Y Sarn
Rhyd Y Sarn gwynedd wales LL41 4NT United Kingdom
LL52 0NDRhyd-Y-Benllig
Rhyd-Y-Benllig gwynedd wales LL52 0ND United Kingdom
LL53 8TRRhydyclafdy
Rhydyclafdy gwynedd wales LL53 8TR United Kingdom
LL40 2AURhydymain
Rhydymain gwynedd wales LL40 2AU United Kingdom
LL57 4AXSaint Anns Bethesda
Saint Anns Bethesda gwynedd wales LL57 4AX United Kingdom
LL53 8EFSarn
Sarn gwynedd wales LL53 8EF United Kingdom
LL53 7BLSarn Bach
Sarn Bach gwynedd wales LL53 7BL United Kingdom
LL23 7LHSarnau
Sarnau gwynedd wales LL23 7LH United Kingdom
LL54 5UWSaron
Saron gwynedd wales LL54 5UW United Kingdom
LL57 4RGSling
Sling gwynedd wales LL57 4RG United Kingdom
LL47 6UWSoar
Soar gwynedd wales LL47 6UW United Kingdom
LL40 2PYTabor
Tabor gwynedd wales LL40 2PY United Kingdom
LL54 5DETainlon
Tainlon gwynedd wales LL54 5DE United Kingdom
LL36 9AJTal Y Llyn
Tal Y Llyn gwynedd wales LL36 9AJ United Kingdom
LL47 6TFTalsarnau
Talsarnau gwynedd wales LL47 6TF United Kingdom
LL41 3NATalwaenydd
Talwaenydd gwynedd wales LL41 3NA United Kingdom
LL43 2AETalybont
Talybont gwynedd wales LL43 2AE United Kingdom
LL54 6AETalysarn
Talysarn gwynedd wales LL54 6AE United Kingdom
LL41 3YTTan-Y-Bwlch
Tan-Y-Bwlch gwynedd wales LL41 3YT United Kingdom
LL41 3TETanygrisiau
Tanygrisiau gwynedd wales LL41 3TE United Kingdom
LL55 2YFThe Park
The Park gwynedd wales LL55 2YF United Kingdom
LL41 4SWTrawsfynydd
Trawsfynydd gwynedd wales LL41 4SW United Kingdom
LL57 2NZTreborth
Treborth gwynedd wales LL57 2NZ United Kingdom
LL49 9YNTreflys
Treflys gwynedd wales LL49 9YN United Kingdom
LL54 5LDTrefor
Trefor gwynedd wales LL54 5LD United Kingdom
LL57 4ANTregarth
Tregarth gwynedd wales LL57 4AN United Kingdom
LL49 9TGTremadog
Tremadog gwynedd wales LL49 9TG United Kingdom
LL53 8PETudweiliog
Tudweiliog gwynedd wales LL53 8PE United Kingdom
LL36 0TBTywyn
Tywyn gwynedd wales LL36 0TB United Kingdom
SY20 9BWUpper Corris
Upper Corris gwynedd wales SY20 9BW United Kingdom
LL54 7BPUpper Llandwrog
Upper Llandwrog gwynedd wales LL54 7BP United Kingdom
LL53 8BYUwch Mynydd
Uwch Mynydd gwynedd wales LL53 8BY United Kingdom
LL57 4BSVaynol Park
Vaynol Park gwynedd wales LL57 4BS United Kingdom
LL57 4EHWaen Pentir
Waen Pentir gwynedd wales LL57 4EH United Kingdom
LL57 4ULWaen Wen
Waen Wen gwynedd wales LL57 4UL United Kingdom
LL55 4EJWaunfawr
Waunfawr gwynedd wales LL55 4EJ United Kingdom
LL56 4QGY Felinheli
Y Felinheli gwynedd wales LL56 4QG United Kingdom
LL53 6RPY Ffor
Y Ffor gwynedd wales LL53 6RP United Kingdom
LL52 0AFY Maes
Y Maes gwynedd wales LL52 0AF United Kingdom
LL52 0PAYnys
Ynys gwynedd wales LL52 0PA United Kingdom
📋 United Kingdom Address and Delivery Guidance
📮
Use a Complete Delivery Address:
Include the recipient name, building or street address, locality, region where applicable, postal code when the destination uses one, and the destination country or territory.
🌍
Follow Local Address Conventions:
Use the language, character set and address order requested by the recipient, official postal operator or carrier. Do not assume every destination uses the same postal-code format.
✅
Verify Before Dispatch:
Confirm the postal code, service coverage and any customs or carrier requirements with the recipient and the relevant official postal operator before shipping.
💡
Delivery Information Is Context-Specific:
Postal codes help routing only in territories that use them. Accurate recipient details remain essential for delivery in every destination.
Postal information, sources and verification
Use this page as a routing reference and confirm the complete address, postal code format and delivery restrictions with the relevant official postal operator or carrier before dispatch.
Editorial and service accountability
This postal-code reference is maintained by the 56ok.com logistics-content team for international shipping preparation. It is reviewed against publicly available postal-operator information; it is not an official postal authority and does not replace carrier or customs instructions.
This reference is maintained as postal and carrier information changes. Need a correction? Contact our team.
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📮United Kingdom Postal FAQ and delivery guidance
📮 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).
🔍 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.
⚠️ 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.
📬 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).
