# BT postcode area

54°36′11″N 5°55′23″W﻿ / ﻿54.603°N 5.923°W﻿ / 54.603; -5.923
The BT postcode area, also known as the Belfast postcode area, covers all of Northern Ireland and was the last part of the United Kingdom to be coded, between 1970 and 1974. This area is a group of 82 postcode districts in Northern Ireland, within 44 post towns and around 47,227 live postcodes.
With a population of over 1.8 million people, BT is the second most populous UK postcode area, after the B postcode area (Birmingham, 1.9 million). It is the only UK postcode area that has land borders with non-UK postcode areas and is also the only UK postcode area that borders the European Union. BT borders nine Eircode routing areas in the neighbouring Republic of Ireland: F94, F93, F91, N41, H23, H18, H14, A91, and A75.
Mail for the BT postcode area is processed at the Northern Ireland Mail Centre in Newtownabbey.

## Coverage
### Belfast

Prior to the introduction of postcodes, Belfast had already been divided into numbered postal districts, for example, Belfast 12. Today, the Belfast post town covers postcode districts BT1 to BT17 and part of BT29. In common with all addresses in Northern Ireland, Belfast postcodes start with the letters BT, a mnemonic of the capital city's name. The commercial centre of the city is designated BT1 and the surrounding districts form a roughly sequential clockwise ring around the city. The postcode of the Royal Mail offices at Tomb Street in Belfast is BT1 1AA.
| Postcode district | Post town | Coverage | Local authority area(s) |
| BT1 | BELFAST | Belfast City Centre (City Hall and north) | Belfast |
| BT2 | BELFAST | Belfast City Centre (south of City Hall) | Belfast |
| BT3 | BELFAST | Titanic Quarter, Belfast Harbour Estate (including Belfast City Airport), Holywood Exchange | Belfast |
| BT4 | BELFAST | East Belfast: Sydenham, Belmont, Stormont, Knocknagoney, Upper Newtownards Road, Newtownards Road, Ballyhackamore (Part) | Belfast |
| BT5 | BELFAST | East Belfast: Castlereagh, Clarawood, Crossnacreevy, Gilnahirk, Connswater, Braniel (Part), Ballyhackamore (Part) | Belfast, Lisburn and Castlereagh |
| BT6 | BELFAST | East Belfast: Castlereagh, Woodstock, Cregagh, Knockbreda, Mount Merrion, Rosetta, Ravenhill Road | Belfast, Lisburn & Castlereagh |
| BT7 | BELFAST | South Belfast: Ormeau, Annadale, University Avenue, Botanic Avenue, Donegall Pass, Bradbury Place, Ballynafeigh | Belfast |
| BT8 | BELFAST | South Belfast: Forestside, Saintfield Road, Four Winds, Mount Oriel, Laurelgrove, Carryduff, Knockbreda, Woodbreda, Newtownbreda | Belfast, Lisburn & Castlereagh City Council |
| BT9 | BELFAST | South Belfast: Queens Quarter, Malone, Lisburn Road, Windsor, Adelaide, Balmoral, Musgrave Park, Taughmonagh, Stranmillis | Belfast |
| BT10 | BELFAST | South Belfast: Finaghy, Erinvale | Belfast |
| BT11 | BELFAST | West Belfast: Andersonstown, Lenadoon, Suffolk, Ladybrook, Turf Lodge | Belfast |
| BT12 | BELFAST | South Belfast: Sandy Row, The Village, Boucher Road, Donegall Road West Belfast: Falls Road | Belfast |
| BT13 | BELFAST | North Belfast: Shankill Road, Woodvale, Ballygomartin, Springmartin, Glencairn, Highfield. West Belfast: Clonard | Belfast |
| BT14 | BELFAST | North Belfast: Crumlin Road, Ballysillan, Upper Ballysillan, Ardoyne, Carr's Glen | Belfast, Antrim and Newtownabbey |
| BT15 | BELFAST | North Belfast: York Road, Yorkgate, Seaview, Mount Vernon, Antrim Road, New Lodge, Sailortown | Belfast |
| BT16 | BELFAST | East Belfast: Dundonald, Millmount Village | Lisburn & Castlereagh |
| BT17 | BELFAST | West Belfast: Dunmurry, Hannahstown, Twinbrook, Poleglass, Lagmore. North Lisburn: Derriaghy, Seymour Hill | Belfast, Lisburn & Castlereagh |
| BT29 | BELFAST | Belfast International Airport | Antrim & Newtownabbey |
The only BELFAST addresses in BT29 are at Belfast International Airport. All other addresses in BT29 are under the post town CRUMLIN.

### Rest of Northern Ireland

The remainder of Northern Ireland is divided into 43 other post towns which are further divided into postcode districts BT18–BT49, BT51–BT57, BT58 (non-geographic postcode district reassigned from Belfast to Newtownabbey post town), BT60–BT71, BT74–BT82 and BT92–BT94. Certain addresses in BT29 located at Belfast International Airport (a total of 31 delivery points) are in the post town of BELFAST despite being geographically under the post town of CRUMLIN, which has the remaining 7,206 delivery points in that postcode area.
| Postcode district | Post town | Coverage | Local authority area(s) |
| BT18 | HOLYWOOD | Holywood, Craigavad. | Ards and North Down |
| BT19 | BANGOR | Bangor (outside Ring Road), Crawfordsburn, Groomsport, Helens Bay | Ards and North Down |
| BT20 | BANGOR | Bangor (within Ring Road). | Ards and North Down |
| BT21 | DONAGHADEE | Donaghadee | Ards and North Down |
| BT22 | NEWTOWNARDS | Newtownards, Ardkeen, Ballyhalbert, Ballywalter, Carrowdore, Cloughey, Greyabbey, Kircubbin, Millisle, Portaferry, Portavogie. | Ards and North Down |
| BT23 | NEWTOWNARDS | Newtownards, Ballygowan, Comber, Conlig, Killinchy, Moneyreagh. | Ards and North Down, Lisburn and Castlereagh |
| BT24 | BALLYNAHINCH | Ballynahinch, Drumaness, Saintfield | Newry, Mourne and Down, Lisburn and Castlereagh |
| BT25 | DROMORE | Dromore, Dromara, Finnis, Waringsford. | Armagh, Banbridge and Craigavon, Lisburn and Castlereagh |
| BT26 | HILLSBOROUGH | Hillsborough, Annahilt, Culcavy. | Lisburn and Castlereagh |
| BT27 | LISBURN | Lisburn, Cargacreevy, Drumalig, Drumbo, Hilden, Hillhall, Lambeg, Temple. | Lisburn and Castlereagh |
| BT28 | LISBURN | Lisburn, Ballinderry Lower, Ballinderry Upper, Stoneyford | Lisburn and Castlereagh |
| BT29 | CRUMLIN | Crumlin, Aldergrove, Dundrod, Glenavy, Nutts Corner | Antrim and Newtownabbey |
| BT30 | DOWNPATRICK | Downpatrick, Ardglass, Ballyhornan, Ballykinler, Castleward, Clough, Crossgar, Kilclief, Killard, Killough, Killyleagh, Listooder, Loughinisland, Seaforde, Strangford, Toye | Newry, Mourne and Down |
| BT31 | CASTLEWELLAN | Castlewellan, Ballyward. | Newry, Mourne and Down, Armagh, Banbridge and Craigavon |
| BT32 | BANBRIDGE | Banbridge, Annaclone, Ballinaskeagh, Ballyroney, Corbet, Katesbridge, Lenaderg, Leitrim, Loughbrickland, Seapatrick. | Armagh, Banbridge and Craigavon |
| BT33 | NEWCASTLE | Newcastle, Bryansford, Dundrum. | Newry, Mourne and Down |
| BT34 | NEWRY (South Down section) | Newry, Annalong, Ballymartin, Cabra, Hilltown, Kilcoo, Kilkeel, Mayobridge, Rathfriland, Rostrevor, Warrenpoint | Newry, Mourne and Down |
| BT35 | NEWRY (South Armagh section) | Jerrettspass, Bessbrook, Camlough, Crossmaglen, Belleeks, Newtownhamilton, Poyntzpass | Newry, Mourne and Down |
| BT36 | NEWTOWNABBEY | Newtownabbey, Mossley, Glengormley, Fairview, Blackrock | Antrim and Newtownabbey |
| BT37 | NEWTOWNABBEY | Newtownabbey, Whitehouse, Rathcoole, Monkstown, Jordanstown | Antrim and Newtownabbey |
| BT38 | CARRICKFERGUS | Carrickfergus, Ballycarry, Greenisland, Kilroot, Whitehead. | Mid and East Antrim |
| BT39 | BALLYCLARE | Ballyclare, Ballynure, Doagh, Parkgate, Straid, Templepatrick, Roughfort. | Antrim and Newtownabbey, Mid and East Antrim |
| BT40 | LARNE | Larne, Ballygally, Glenoe, Glynn, Islandmagee, Kilwaughter, Magheramorne, Millbrook. | Mid and East Antrim |
| BT41 | ANTRIM | Antrim, Dunadry, Muckamore, Randalstown, Toomebridge. | Antrim and Newtownabbey |
| BT42 | BALLYMENA | Broughshane, Cullybackey, Galgorm, Kells. | Mid and East Antrim |
| BT43 | BALLYMENA | Cargan, Knockanully | Mid and East Antrim |
| BT44 | BALLYMENA | Portglenone, Carnlough, Glenarm, Clogh Mills, Rasharkin, Glenariff/Waterfoot, Cushendun, Cushendall, Dunloy, Loughguile, Glarryford. | Mid and East Antrim, Causeway Coast and Glens, Mid Ulster |
| BT45 | MAGHERAFELT | Magherafelt, Ballyronan, Bellaghy, Castledawson, Desertmartin, Draperstown, Knockloughrim, Moneymore, Tobermore, Fallalea, Fallaghloon | Mid Ulster |
| BT46 | MAGHERA | Maghera, Lisnamuck, Swatragh, Upperlands | Mid Ulster |
| BT47 | LONDONDERRY | Derry, Waterside, Claudy, Feeny, Dungiven, Eglinton, Park, New Buildings. | Derry City and Strabane |
| BT48 | LONDONDERRY | Derry, Cityside, Ballynagard, Coshquin, Rosemount, The Collon, Culmore. | Derry City and Strabane |
| BT49 | LIMAVADY | Limavady, Ballykelly | Causeway Coast and Glens |
| BT51 | COLERAINE | Coleraine, Aghadowey, Articlave, Bellany, Blackhill, Castlerock, Castleroe, Garvagh, Kilrea, Macosquin, Ringsend | Causeway Coast and Glens |
| BT52 | COLERAINE | Coleraine, Ballyvelton, Cloyfin | Causeway Coast and Glens |
| BT53 | BALLYMONEY | Ballymoney, Dervock, Armoy, Ballybogy. | Causeway Coast and Glens |
| BT54 | BALLYCASTLE | Ballycastle, Ballintoy, Ballypatrick, Ballyvoy, Cape Castle, Glenshesk, Maghercashel, Maghernahar, Moyarget, Torr, Rathlin Island. | Causeway Coast and Glens |
| BT55 | PORTSTEWART | Portstewart | Causeway Coast and Glens |
| BT56 | PORTRUSH | Portrush, Craigahullier, Urbalreagh. | Causeway Coast and Glens |
| BT57 | BUSHMILLS | Ballintoy, Bushmills, Castlecatt, Dunseverick, Portballintrae | Causeway Coast and Glens |
| BT58 | NEWTOWNABBEY | No longer in use, formerly Child Support Agency (defunct) | non-geographic |
| BT60 | ARMAGH | Killylea, Tynan, Belcoo, Middletown, Keady, Darkley, Markethill, Kingsmills | Armagh, Banbridge and Craigavon, Newry, Mourne and Down |
| BT61 | ARMAGH | Armagh, Collone, Hamiltonsbawn, Kilmore, Loughgall, Richhill. | Armagh, Banbridge and Craigavon |
| BT62 | CRAIGAVON | Craigavon, Portadown, Tandragee, Clare, Scotch Street. | Armagh, Banbridge and Craigavon |
| BT63 | CRAIGAVON | Gilford, Laurencetown, Portadown, Scarva | Armagh, Banbridge and Craigavon |
| BT64 | CRAIGAVON | Craigavon (West): Knockmenagh, Mandeville. | Armagh, Banbridge and Craigavon |
| BT65 | CRAIGAVON | Craigavon (East): Drumgor, Legaghory, Tullygally, Brownlow. | Armagh, Banbridge and Craigavon |
| BT66 | CRAIGAVON | Derryadd, Derrytrasna, Dollingstown, Donaghcloney, Lurgan, Waringstown | Armagh, Banbridge and Craigavon |
| BT67 | CRAIGAVON | Aghagallon, Aghalee, Gawley's Gate, Lurgan, Magheralin, Moira | Armagh, Banbridge and Craigavon |
| BT68 | CALEDON | Caledon, Minterburn | Mid Ulster |
| BT69 | AUGHNACLOY | Aughnacloy, Carnteel | Mid Ulster |
| BT70 | DUNGANNON | Dungannon, Ballygawley, Cappagh, Castlecaulfield, Donaghmore, Galbally, Garvaghy, Pomeroy, Rock, Seskilgreen | Mid Ulster |
| BT71 | DUNGANNON | Dungannon, Benburb, Blackwatertown, Bush, Coalisland, Killycolpy, Ardboe, Moygashel, Stewartstown | Mid Ulster |
| BT74 | ENNISKILLEN | Enniskillen town, Boho | Fermanagh and Omagh |
| BT75 | FIVEMILETOWN | Fivemiletown, Clabby | Mid Ulster, Fermanagh and Omagh |
| BT76 | CLOGHER | Clogher | Mid Ulster |
| BT77 | AUGHER | Augher | Mid Ulster |
| BT78 | OMAGH | Omagh, Dromore, Drumquin, Eskra, Fintona, Killynure, Newtownstewart, Seskanore, Trillick | Fermanagh and Omagh |
| BT79 | OMAGH | Omagh, Drumlea, Glengawna, Gortin, Mountfield, Plumbridge, Rosnamuck, Sheskinshule, Sixmilecross | Fermanagh and Omagh |
| BT80 | COOKSTOWN | Cookstown, Coagh, Tullyhogue | Mid Ulster |
| BT81 | CASTLEDERG | Castlederg, Aghyaran, Clare, Garvetagh, Killen, Killeter, Mournebeg, Scraghey, Spamount | Derry City and Strabane |
| BT82 | STRABANE | Strabane, Artigarvan, Ballymagorry, Bready, Clady, Douglas Bridge, Dunamanagh, Sion Mills, Victoria Bridge | Derry City and Strabane |
| BT92 | ENNISKILLEN | Lisnaskea, Florencecourt, Derrylin, Newtownbutler | Fermanagh and Omagh |
| BT93 | ENNISKILLEN | Belleek, Belcoo, Kesh, Derrygonnelly, Garrison | Fermanagh and Omagh |
| BT94 | ENNISKILLEN | Irvinestown, Ballinamallard, Brookeborough, Tempo, Maguiresbridge, Lisbellaw | Fermanagh and Omagh |

#### Note

* 1 2 The Post Office guide uses Londonderry, the legal name for the city also called Derry; the post office accepts either name. The local government district's legal name is Derry. See also Derry/Londonderry name dispute