Complete Guide to Northern Ireland’s Administrative Geography & Postcode System
The definitive reference — from 11 local government districts and 6 historic counties to 462 electoral wards and the BT postcode system, with every level explained.
- Overview & Key Facts
- The 6 Historic Counties
- The 11 Local Government Districts
- The BT Postcode System Explained
- BT Postcode Districts
- District Electoral Areas
- 🏛 Tourism & City Tour Guide
- 🏨 Popular & Famous Hotels
- 🚃 Transport Hubs for Tourists
- 🏥 Healthcare Facilities
- 🏛 Foreign Consulates & Missions
- Frequently Asked Questions
- Popular Keyword Tags
📊 Overview & Key Facts
Northern Ireland is one of the four constituent countries of the United Kingdom, located in the north-eastern part of the island of Ireland. It is governed by both the UK Government in Westminster and the devolved Northern Ireland Executive at Stormont, Belfast. Its local government is structured into 11 single-tier districts (known as Local Government Districts or LGDs), which replaced the former 26 councils in April 2015.
Unlike councils in England, Scotland, or Wales, Northern Irish councils have a more limited remit — they handle planning, waste & recycling, leisure, community services, building control, and local economic development, but not education, roads, or housing.
🏰 The 6 Historic Counties
Northern Ireland comprises six of the nine counties of the historic province of Ulster. These counties date from the Kingdom of Ireland (16th–17th century) and formed the basis of local government until 1973. Today they have no administrative role but retain strong cultural and sporting significance.
| County | County Town | Created | Pop. (2021) | Area (ha) | Links |
|---|---|---|---|---|---|
| Antrim | Antrim | 1570 | 651,321 | 308,645 | |
| Armagh | Armagh | 1571 | 194,394 | 132,698 | |
| Down | Downpatrick | 1570 | 553,261 | 248,905 | |
| Fermanagh | Enniskillen | 1584 | ~117,000 | ~183,000 | |
| Londonderry | Coleraine | 1613 | ~250,000 | ~213,000 | |
| Tyrone | Omagh | 1584 | ~177,000 | ~312,000 |
☰ The 11 Local Government Districts
Since April 2015, Northern Ireland has been divided into 11 Local Government Districts (LGDs). Each is a single-tier unitary authority governed by an elected council. Belfast has 60 councillors and 10 DEAs; all other districts have 40–41 councillors and 7 DEAs each.
Population: 352,390 (2024) | Area: 133 km² | Councillors: 60 | DEAs: 10
Belfast is the capital and largest city. Belfast City Council is the only council with 10 DEAs. Despite being the smallest by area, it is by far the most densely populated district (2,650/km²).
| DEA | Wards | Pop. (2021) |
|---|---|---|
| Balmoral | 5 | 24,491 |
| Black Mountain | 7 | 35,880 |
| Botanic | 5 | 49,727 |
| Castle | 6 | 33,677 |
| Collin | 6 | 33,909 |
| Court | 6 | 33,475 |
| Lisnasharragh | 6 | 29,170 |
| Oldpark | 6 | 34,352 |
| Ormiston | 7 | 34,615 |
| Titanic | 6 | 36,122 |
BT Postcodes: BT1–BT17, BT29 (part), BT58
Population: 148,100 (2024) | Area: 571 km² | Councillors: 40 | DEAs: 7
Borough council covering Antrim town and Metropolitan Newtownabbey. DEAs: Airport, Antrim, Ballyclare, Dunsilly, Glengormley Urban, Macedon, Three Mile Water.
BT Postcodes: BT29, BT36–BT41
Population: 165,415 (2024) | Area: 458 km² | Councillors: 40 | DEAs: 7
Borough council covering Bangor, Newtownards, Comber, Donaghadee, and the Ards Peninsula. DEAs: Ards Peninsula, Bangor Central, Bangor East & Donaghadee, Bangor West, Comber, Holywood & Clandeboye, Newtownards.
BT Postcodes: BT18–BT23
Population: 222,511 (2024) | Area: 1,332 km² | Councillors: 41 | DEAs: 7
The largest district by population outside Belfast. Covers the historic city of Armagh, the Craigavon Urban Area (Lurgan & Portadown), and Banbridge. DEAs: Armagh, Banbridge, Craigavon, Cusher, Lagan River, Lurgan, Portadown.
BT Postcodes: BT60–BT68
Population: 141,954 (2024) | Area: 1,980 km² | Councillors: 40 | DEAs: 7
Home to the Giant’s Causeway (UNESCO World Heritage Site), Coleraine, Ballycastle, Portrush, and Limavady. DEAs: Bann, Ballymoney, Benbradagh, Causeway, Coleraine, Limavady, The Glens.
BT Postcodes: BT44, BT49–BT57
Population: 152,383 (2024) | Area: 1,237 km² | Councillors: 40 | DEAs: 7
Covers Derry City (second largest city in NI), Strabane, and surrounding rural areas along the border with Co. Donegal (Republic of Ireland). DEAs: Ballyarnett, Derg, Faughan, Foyleside, Sperrin, The Moor, Waterside.
BT Postcodes: BT47–BT49, BT82
Population: 117,687 (2024) | Area: 2,836 km² | Councillors: 40 | DEAs: 7
The largest district by area and smallest by population. Covers Enniskillen, Omagh, and the Fermanagh Lakelands. DEAs: Enniskillen, Erne East, Erne North, Erne West, Mid Tyrone, Omagh, West Tyrone.
BT Postcodes: BT74–BT78, BT92–BT94
Population: 151,669 (2024) | Area: 504 km² | Councillors: 40 | DEAs: 7
City council covering Lisburn city and the Castlereagh area south-east of Belfast. DEAs: Castlereagh East, Castlereagh South, Downshire East, Downshire West, Killultagh, Lisburn North, Lisburn South.
BT Postcodes: BT27–BT28
Population: 139,913 (2024) | Area: 1,045 km² | Councillors: 40 | DEAs: 7
Covers Ballymena, Carrickfergus, Larne, and the Antrim Coast Road. DEAs: Ballymena, Bannside, Braid, Carrick Castle, Coast Road, Knockagh, Larne Lough.
BT Postcodes: BT38–BT44
Population: 152,718 (2024) | Area: 1,823 km² | Councillors: 40 | DEAs: 7
Rural district covering Cookstown, Dungannon, Magherafelt, and the Sperrins. DEAs: Carntogher, Clogher Valley, Cookstown, Dungannon, Magherafelt, Moyola, Torrent.
BT Postcodes: BT45–BT46, BT70–BT71, BT79–BT80
Population: 183,115 (2024) | Area: 1,628 km² | Councillors: 41 | DEAs: 7
Covers Newry city, the Mourne Mountains (AONB), Newcastle, Downpatrick, and Warrenpoint. DEAs: Crotlieve, Downpatrick, Newry, Rowallane, Slieve Croob, Slieve Gullion, The Mournes.
BT Postcodes: BT24–BT25, BT30–BT35
Northern Ireland uses a single postcode area: BT (derived from “Belfast”). The BT postcode system was introduced between 1970 and 1974 — the last part of the UK to be postcoded. All addresses in Northern Ireland share the BT prefix.
| Level | Name | Example | Count | Coverage |
|---|---|---|---|---|
| 1 — Area | Postcode Area | BT | 1 | All of Northern Ireland |
| 2 — District | Postcode District | BT1 | 80 | Town / neighbourhood |
| 3 — Sector | Postcode Sector | BT1 5 | ~1,100 | ~3,000 addresses |
| 4 — Unit | Postcode Unit | BT1 5GS | ~63,000 | ~15 addresses |
📋 BT Postcode Districts
The BT postcode area contains 80 active postcode districts covering all of Northern Ireland. Belfast city centre uses BT1–BT17; the remainder of Northern Ireland uses BT18–BT82 and BT92–BT94.
Belfast Post Town (BT1–BT17, BT29 part, BT58)
| District | Area Covered | Map |
|---|---|---|
| BT1–BT3 | Belfast City Centre | |
| BT4–BT6 | East Belfast (Sydenham, Knock, Castlereagh) | |
| BT7–BT9 | South Belfast (Ormeau, Carryduff, Malone) | |
| BT10–BT11 | Finaghy, Andersonstown | |
| BT12–BT13 | Falls, West Belfast | |
| BT14–BT15 | North Belfast (Ballysillan) | |
| BT16–BT17 | Dundonald, Dunmurry |
Rest of Northern Ireland (BT18–BT82, BT92–BT94)
🗺 District Electoral Areas (DEAs)
Each of the 11 councils is divided into District Electoral Areas (DEAs). Belfast has 10 DEAs; all other districts have 7 each, giving a total of 80 DEAs across Northern Ireland. Each DEA elects 5, 6, or 7 councillors using the Single Transferable Vote (STV) system, totalling 462 councillors.
DEAs are in turn made up of electoral wards — the most granular geographic unit in NI’s political geography. There are 462 wards in total (one councillor per ward, but all councillors represent the entire DEA). Ward boundaries were last redrawn in 2012.
| District | DEAs | Wards | Councillors | Links |
|---|---|---|---|---|
| Belfast | 10 | 60 | 60 | |
| Antrim & Newtownabbey | 7 | 40 | 40 | |
| Ards & North Down | 7 | 40 | 40 | |
| Armagh, Banbridge & Craigavon | 7 | 41 | 41 | |
| Causeway Coast & Glens | 7 | 40 | 40 | |
| Derry City & Strabane | 7 | 40 | 40 | |
| Fermanagh & Omagh | 7 | 40 | 40 | |
| Lisburn & Castlereagh | 7 | 40 | 40 | |
| Mid & East Antrim | 7 | 40 | 40 | |
| Mid Ulster | 7 | 40 | 40 | |
| Newry, Mourne & Down | 7 | 41 | 41 | |
| TOTAL | 80 | 462 | 462 | — |
🏛 Tourism & City Tour Guide
Northern Ireland welcomes over 5 million visitors annually, drawn by UNESCO sites, Game of Thrones filming locations, and vibrant cities. With 11 million visits to 124 attractions in 2022 alone, here is a curated guide by district.
The capital city — birthplace of the Titanic and a vibrant cultural hub. Titanic Belfast is NI’s #1 attraction.
Northern Ireland’s most iconic landscape — the UNESCO Giant’s Causeway and the Antrim Coast Road.
UK City of Culture 2013 — the only remaining completely walled city in Ireland.
Nine dramatic glens, medieval castles, and the spectacular Antrim Coast Road.
NI’s highest peaks — Slieve Donard (850m), AONB, C.S. Lewis inspiration, and St Patrick’s burial place.
A waterworld of 154 islands on Lough Erne, underground caves, and tranquil nature.
The ecclesiastical capital of Ireland, home of St Patrick’s two cathedrals and the Sperrin Mountains.
🏨 Popular & Famous Hotels
From Belfast’s grand Victorian hotels to charming castle stays on the Causeway Coast, Northern Ireland offers world-class hospitality. Below are the most famous and popular hotels per area, with direct links for directions and booking.
Belfast’s hotel scene blends Victorian grandeur with modern design. The city centre is compact and walkable.
| Hotel | Area | Stars | Highlight | Directions | Official Site |
|---|---|---|---|---|---|
| The Merchant Hotel | Cathedral Quarter | 5⭐ | NI’s only 5-star, former bank, Art Deco | 🌐 Site | |
| The Fitzwilliam Hotel | City Centre | 5⭐ | Boutique luxury, near City Hall | 🌐 Site | |
| The Europa Hotel | Great Victoria St | 4⭐ | Belfast’s most famous hotel, historic icon | 🌐 Site | |
| Grand Central Hotel | City Centre | 4⭐ | Ireland’s tallest hotel, Observatory Bar | 🌐 Site | |
| Titanic Hotel Belfast | Titanic Quarter | 4⭐ | Former Harland & Wolff HQ, drawing rooms | 🌐 Site | |
| Culloden Estate & Spa | Holywood | 5⭐ | Palatial country estate, Belfast Lough views | 🌐 Site |
| Hotel | Location | Stars | Highlight | Directions | Official Site |
|---|---|---|---|---|---|
| The Bushmills Inn | Bushmills | 4⭐ | Coaching inn, turf fires, near Giant’s Causeway | 🌐 Site | |
| Dunluce Lodge | Portrush | 5⭐ | Boutique luxury, Royal Portrush golf views | 🌐 Site | |
| Ballygally Castle | Antrim Coast | 4⭐ | 17th-century castle hotel, sea views | 🌐 Site | |
| Marine Hotel Ballycastle | Ballycastle | 4⭐ | Waterfront, views to Rathlin Island | 🌐 Site |
🚃 Transport Hubs for Tourists
Northern Ireland has 3 airports, modern rail links including the cross-border Enterprise service to Dublin, extensive Translink bus networks, and ferry connections to Great Britain. Below are all major transport hubs per area.
Belfast is NI’s transport hub — two airports, a brand-new Grand Central Station (opened 2024), and Glider rapid bus transit.
✈ Airports
🚆 Railway & Bus Stations
⚓ Ferry Ports
The Causeway Coast is served by one of the most scenic rail lines in Europe — the Belfast-Derry line via Coleraine.
The western counties have no rail service — Goldline express coaches and Ulsterbus provide all connections.
🏥 Healthcare Facilities for Tourists
Northern Ireland’s Health & Social Care (HSC) system provides emergency treatment to all visitors. Below are the hospitals per area, with direct Google Maps links. In an emergency, call 999 (ambulance) or 0300 123 1 123 (Phone First / non-emergency).
Belfast Health & Social Care Trust operates the largest hospitals in Northern Ireland. The Royal Victoria Hospital is the regional trauma centre treating 80,000+ inpatients annually.
The Northern & South Eastern HSC Trusts cover Antrim, east coast, and the greater Belfast commuter area.
Key hospitals for tourists visiting the Giant’s Causeway, Carrick-a-Rede, and the north coast.
The Western HSC Trust covers Derry/Londonderry and surrounding areas. Altnagelvin is the second largest hospital in Northern Ireland.
The Southern HSC Trust covers Armagh, Craigavon, and Newry — key areas on the route to/from the Republic of Ireland.
Covering rural western Northern Ireland including Lough Erne, Sperrins, and the Tyrone countryside — popular for outdoor tourism.
🏛 Foreign Consulates & Diplomatic Missions
Northern Ireland hosts 5 Consulates General and over 30 Honorary Consulates, mostly based in Belfast. If you need emergency consular assistance as a tourist, contact the nearest consulate below. For countries without representation in NI, the embassy in London is the next point of contact. In emergencies, call 999 first.
These are full career diplomatic missions with professional consular staff providing visa, passport, and citizen services.
Honorary Consuls can assist with basic consular matters. For visa/passport services, contact the London embassy.
❓ Frequently Asked Questions
Northern Ireland was the last part of the UK to receive postcodes (1970–1974). The entire country was assigned the single prefix BT (derived from Belfast). With 80 districts (BT1–BT82, BT92–BT94), the system has sufficient granularity despite using only one area code.
In 2015, Northern Ireland’s 26 district council areas were consolidated into 11 larger Local Government Districts. This reform was enacted by the Local Government (Boundaries) Order 2012. Elections to the new councils were held in 2014, and they assumed full powers on 1 April 2015.
No. The six counties (Antrim, Armagh, Down, Fermanagh, Londonderry, Tyrone) lost their administrative function in 1973 when the previous county-based system was replaced with 26 districts. They remain culturally significant, especially for the GAA (Gaelic Athletic Association), the Royal Mail (for addressing), and general identity.
NI councils have a much narrower remit. They handle planning, waste, leisure, building control, and local economic development. However, education, housing, and roads are handled centrally by the Northern Ireland Executive, not by local councils. This contrasts sharply with English councils which manage all these services.
A DEA is a multi-member electoral division within a council area. Each DEA comprises 5–7 wards and elects the same number of councillors using the Single Transferable Vote (STV) system. There are 80 DEAs in total — 10 in Belfast and 7 in every other district.