New 42-day free trial Get it now
Smarty
Northern Ireland flag

Northern Ireland address format & examples

How to write a Northern Irish address

Northern Ireland is full of unique geographical features, including the Giant’s Causeway—a coastline made of 40k interlocking basalt columns. This stunning feat of nature has become a famous filming location featured in hits like Game of Thrones and Dungeons & Dragons: Honor Among Thieves.

Northern Ireland is also home to the Royal County Down Golf Club and Royal Portrush Golf Club, two of the top golf courses in the world. To have your best clubs and polos on the green, you’ll need to know how to write a Northern Irish address.

Below, we’ve gathered Northern Ireland address examples to help you familiarize yourself with Northern Irish mailing practices. With our suite of address validation tools for Northern Ireland, you’ll be teed up and ready to drive.

Here’s how to write a Northern Ireland address correctly:

  1. Addressee line - The recipient's full name, including the appropriate titles for the area.
  2. (tooltip: premise and thoroughfare) Building number and street name - The building name or number, then the street the address is on without separating punctuation.
  3. (tooltip: dependent locality) Neighborhood or area - The general area the address is in.
  4. (tooltip: locality) City - The city or town the address is in.
  5. (tooltip: postal code) Postcode - The postal code (In Northern Ireland, these are 5 to 7 digits long.)
  6. Country - Finally, the country code of GBR.
Northern Ireland mailing address format example on an envelope

Northern Ireland address examples

Residential address example8 Silverwood Court Lurgan Craigavon BT66 6RP GBR
Address example with units8B Windsor Close Quarter Belfast BT9 6FG GBR
Postal box example143 Main Street P O BOX 56 Bangor BT20 4AQ GBR
Commercial address example1-3 Boucher Road Glenmachan Street Belfast BT12 6JA GBR

Smarty address validation tools

Smarty® has a suite of address validation tools that can format, standardize, and validate Northern Ireland addresses, plus addresses in 250+ other countries and territories worldwide. Validate your Northern Irish address with our tools.
Use the Single Address Verification Tool to verify and format 1 address at a time, the Bulk Address Validation Tool to verify and format a list addresses simultaneously, or use the International Street Address API to integrate address validation and formatting programmatically into your software systems and workflows.
Single Address Verification ToolBulk Address Validation ToolInternational Street Address API

Postal information

Northern Ireland's national postal system, "Royal Mail," was established in 1660. The organization manages a substantial network, indicative of its role as a major postal service provider in the region.
Administrative area types and count
11 Local Government Districts (LGDs)
Administration area names and abbreviations

Antrim and Newtownabbey
Ards and North Down
Armagh City, Banbridge and Craigavon
Belfast City
Causeway Coast and Glens
Derry City and Strabane
Fermanagh and Omagh
Lisburn and Castlereagh City
Mid and East Antrim
Mid Ulster
Newry, Mourne and Down

Term to describe postal codes
postcode
Postal code in language
postcode
Postal code format
A9 9AA
Postal service provider and website

Country information

How to write a letter to Northern Ireland is par for the course. There’s much more address data available for Northern Ireland. Smarty provides everything from ISO codes to major city information. With the correct Northern Irish address format, the information at your fingertips is mindblowing.

Country/territory name
Northern Ireland
ISO3
NIR
ISO 3166-1 alpha-2 country code
GB
ISO 3166-1 alpha-3 country code
NIR
ISO 3166-1 numeric country code
826
Endonym
Northern Ireland
Total land area
13547 KM²
Capital
Belfast
Other major cities
Belfast, Derry/London

Population information

Total population
1927000 (2024)
Urban / rural distribution
61% / 39%
Urban population
1175470
Rural population
751530
Official language
English
All languages spoken
English, Irish (Gaelic), and Ulster Scots
Most commonly used postal language
English

Data from worldbank.org
CC-BY 4.0

Countries and territories related to Northern Ireland

Now that you've seen our Northern Irish address examples and have become a wizard at Northern Ireland address formats, why not expand your expertise even further? Explore our detailed guides for related countries and territories to see how their address formats and examples vary.
Visit the global address formats page or Europe address formats page for more information on all the other countries and territories we cover. You can also read or read our article about international address verification to learn more.
Aland IslandsAlbaniaAndorraAustriaBelarusBelgiumBosnia and HerzegovinaBulgariaCroatiaCyprusCzech RepublicDenmarkEnglandEstoniaFaroe IslandsFinlandFranceGeorgiaGermanyGibraltarGreeceGuernseyHungaryIcelandIrelandIsle of ManItalyJerseyLatviaLiechtensteinLithuaniaLuxembourgMaltaMoldovaMonacoMontenegroNetherlandsNorth MacedoniaNorwayPolandPortugalRepublic of KosovoRomaniaScotlandSerbiaSlovakiaSloveniaSpainSwedenSwitzerlandUkraineUnited KingdomVatican CityWales
*Data updated as of March 16, 2026

Ready to get started?

Schedule Demo