GB United Kingdom Major Regions Postal Code Details
🏛️ East Ayrshire · Scotland
KA1 2SE
Annandale
KA18 2ER
Auchinleck
KA1 4UW
Caprington
KA5 6LW
Catrine
KA6 6PQ
Coalhall
KA18 3NA
Cronberry
KA3 6JN
Crookedholm
KA2 0HL
Crosshouse
KA18 1DP
Cumnock
KA6 7TX
Dalmellington
KA6 6DJ
Dalrymple
KA17 0ND
Darvel
KA6 7EG
Drongan
KA3 4AJ
Dunlop
KA3 6BT
Fenwick
KA4 8BX
Galston
KA2 0AP
Gatehead
KA18 3SD
Glenbuck
KA1 4BY
Glencairn Industrial Estate
KA6 7FN
Hollybush
KA1 5JX
Hurlford
KA1 2RF
Kilmarnock
KA18 3HQ
Logan
KA1 5LA
Loreny Industrial Estate
KA18 3LG
Lugar
KA3 4EB
Lugton
KA5 6JN
Mauchline
KA4 8PW
Moscow
KA18 3QP
Muirkirk
KA18 4DR
New Cumnock
KA16 9DD
Newmilns
KA18 2PE
Ochiltree
KA6 7LZ
Patna
KA17 0NY
Priestland
KA6 7HF
Rankinston
KA18 2RE
Skares
KA5 6HY
Sorn
KA5 5JD
Stair
KA3 5HP
Stewarton
KA5 5HX
Trabboch
KA3 6JH
Waterside
📮GB United Kingdom Regional Postal Code FAQ & Postal Regulations
📮 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).