GB United Kingdom Major Regions Postal Code Details
🏛️ Mid Ulster · Northern Ireland
BT77 0DE
Augher
BT69 6AG
Aughnacloy
BT70 2HU
Ballygawley
BT45 6LW
Ballyronan
BT45 8LY
Bellaghy
BT71 6UE
Bush
BT68 4TN
Caledon
BT70 2PZ
Cappagh
BT69 6EA
Carnteel
BT70 3ND
Castlecaulfield
BT45 8EZ
Castledawson
BT76 0UF
Clogher
BT80 0BQ
Coagh
BT71 4UE
Coalisland
BT80 0AP
Cookstown
BT45 5LS
Desertmartin
BT70 1AW
Donaghmore
BT45 7LF
Draperstown
BT70 1JY
Dungannon
BT75 0RD
Fivemiletown
BT70 2NR
Galbally
BT71 5HB
Killycolpy
BT45 8QZ
Knockloughrim
BT46 5LP
Lisnamuck
BT46 5JH
Maghera
BT45 6HD
Magherafelt
BT45 7NX
Moneymore
BT70 2UH
Pomeroy
BT70 3HY
Rock
BT70 2DA
Seskilgreen
BT71 5HZ
Stewartstown
BT46 5QN
Swatragh
BT46 5XP
Tamlaght O'Crilly
BT45 5QE
Tobermore
BT80 8UA
Tullyhogue
BT46 5RP
Upperlands
📮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).