En el resto de Irlanda del Norte hay otras 43 ciudades postales. Los distritos de las 43 ciudades postales son los siguientes: BT18 a BT57, BT60 a BT82, BT92 a BT94 y parte de BT29.
| Distrito postal | Ciudad postal | Cobertura | Distritos de gobierno local |
| BT18 | HOLYWOOD | Holywood, Craigavad. | Norte de Down |
| BT19 | BANGOR | Bangor, Crawfordsburn, Groomsport, Helens Bay | North Down, Ards |
| BT20 | BANGOR | Bangor. | Norte de Down |
| BT21 | DONAGHADEE | Donaghadee | Ards |
| BT22 | NEWTOWNARDS | Newtownards, Ardkeen, Ballyhalbert, Ballywalter, Carrowdore, Cloughey, Greyabbey, Kircubbin, Millisle, Portaferry, Portavogie. | Ards |
| BT23 | NEWTOWNARDS | Newtownards, Ballygowan, Comber, Conlig, Killinchy, Moneyrea. | Ards, Castlereagh, North Down |
| BT24 | BALLYNAHINCH | Ballynahinch, Drumaness, Saintfield | Down, Lisburn |
| BT25 | DROMORE | Dromore, Dromara, Finnis, Waringsford. | Banbridge, Lisburn |
| BT26 | HILLSBOROUGH | Hillsborough, Annahilt, Culcavy. | Lisburn |
| BT27 | LISBURN | Lisburn, Cargacreevy, Drumalig, Drumbo, Hilden, Hillhall, Lambeg. | Lisburn |
| BT28 | LISBURN | Lisburn, Ballinderry Lower, Ballinderry Upper, Stoneyford | Lisburn |
| BT29 | BELFAST | Belfast, Crumlin, Aldergrove, Dundrod, Glenavy, Nutts Corner | Belfast |
| BT30 | DOWNPATRICK | Downpatrick, Ardglass, Ballyhornan, Ballykinler, Castleward, Clough, Crossgar, Kilclief, Killard, Killough, Killyleagh, Loughinisland, Seaforde, Strangford, Toye | Abajo |
| BT31 | CASTLEWELLAN | Castlewellan, Ballyward. | Down, Banbridge |
| BT32 | BANBRIDGE | Banbridge, Annaclone, Ballinaskeagh, Ballyroney, Corbet, Katesbridge, Lenaderg, Loughbrickland, Seapatrick. | Banbridge |
| BT33 | NEWCASTLE | Newcastle, Bryansford, Dundrum. | Abajo |
| BT34 | NEWRY (Condado de Down) | Newry, Annalong, Ballymartin, Cabra, Hilltown, Kilcoo, Kilkeel, Mayobridge, Poyntzpass, Rathfriland, Rostrevor, Warrenpoint | Newry y Mourne |
| BT35 | NEWRY (Condado de Armagh) | Jerrettspass, Bessbrook, Camlough, Crossmaglen, Newtownhamilton | Newry y Mourne, Banbridge, Down |
| BT36 | NEWTOWNABBEY | Newtownabbey, Mossley | Newtownabbey |
| BT37 | NEWTOWNABBEY | Newtownabbey | Newtownabbey |
| BT38 | CARRICKFERGUS | Carrickfergus, Ballycarry, Greenisland, Kilroot, Whitehead. | Carrickfergus |
| BT39 | BALLYCLARE | Ballyclare, Ballynure, Doagh, Parkgate, Straid, Templepatrick. | Newtownabbey, Antrim, Ballymena, Larne |
| BT40 | LARNE | Larne, Ballygally, Gleno, Glynn, Islandmagee, Kilwaughter, Magheramorne, Millbrook. | Larne |
| BT41 | ANTRIM | Antrim, Dunadry, Muckamore, Randalstown, Toomebridge. | Antrim |
| BT42 | BALLYMENA | Broughshane, Cullybackey, Galgorm. | Ballymena |
| BT43 | BALLYMENA | Cargan, Knockanully | Ballymena |
| BT44 | BALLYMENA | Portglenone, Carnlough, Glenarm, Clogh Mills, Rasharkin, Glenariff/Waterfoot, Cushendun, Cushendall, Dunloy, Loughguile, Glarryford. | Ballymena, Ballymoney, Magherafelt, Moyle, Larne |
| BT45 | MAGHERAFELT | Magherafelt, Ballyronan, Bellaghy, Castledawson, Desertmartin, Draperstown, Knockloughrim, Moneymore, Tobermore, Fallalea, Fallaghloon | Magherafelt |
| BT46 | MAGHERA | Maghera, Lisnamuck, Swatragh, Upperlands | Magherafelt |
| BT47 | LONDONDERRY | Londonderry, Waterside, Claudy, Feeny, Dungiven, Eglinton, Park, New Buildings. | Derry |
| BT48 | LONDONDERRY | Londonderry, Cityside, Ballynagard, Coshquin, Rosemount, The Collon, Culmore. | Derry |
| BT49 | LIMAVADY | Limavady, Ballykelly | Limavady |
| BT51 | COLERAINE | Coleraine, Aghadowey, Articlave, Bellany, Blackhill, Castlerock, Castleroe, Garvagh, Kilrea, Macosquin, Ringsend | Coleraine |
| BT52 | COLERAINE | Coleraine, Ballyvelton, Cloyfin | Coleraine |
| BT53 | BALLYMONEY | Ballymoney, Dervock, Armoy, Ballybogy. | Ballymoney, Moyle |
| BT54 | BALLYCASTLE | Ballycastle, Ballintoy, Ballypatrick, Ballyvoy, Cape Castle, Glenshesk, Maghercashel, Maghernahar, Moyarget, Torr, Rathlin Island. | Moyle |
| BT55 | PORTSTEWART | Portstewart | Coleraine |
| BT56 | PORTRUSH | Portrush, Craigahullier, Urbalreagh. | Coleraine |
| BT57 | BUSHMILLS | Bushmills, Castlecatt, Dunseverick, Portballintrae | Moyle |
| BT60 | ARMAGH | Killylea, Tynan, Belcoo, Middletown, Keady, Darkley, Markethill, Kingsmills | Armagh, Newry & Mourne |
| BT61 | ARMAGH | Armagh, Collone, Hamiltonsbawn, Kilmore, Loughgall, Richhill. | Armagh |
| BT62 | CRAIGAVON | Craigavon, Portadown, Tandragee, Clare, Scotch Street. | Craigavon, Armagh |
| BT63 | CRAIGAVON | Gilford, Laurencetown, Portadown, Scarva | Craigavon, Banbridge |
| BT64 | CRAIGAVON | Craigavon (Oeste), Knockmenagh, Mandeville. | Craigavon |
| BT65 | CRAIGAVON | Craigavon (Este), Drumgor, Legaghory, Tullygally, Brownlow. | Craigavon |
| BT66 | CRAIGAVON | Derryadd, Derrytrasna, Dollingstown, Donaghcloney, Lurgan, Waringstown | Craigavon |
| BT67 | CRAIGAVON | Aghagallon, Aghalee, Gawley's Gate, Lurgan, Magheralin, Moira | Craigavon |
| BT68 | CALEDON | Caledon | Dungannon y South Tyrone |
| BT69 | AUGHNACLOY | Aughnacloy, Carnteel | Dungannon y South Tyrone |
| BT70 | DUNGANNON | Dungannon, Ballygawley, Cappagh, Castlecaulfield, Donaghmore, Galbally, Garvaghy, Pomeroy, Rock, Seskilgreen | Dungannon y South Tyrone |
| BT71 | DUNGANNON | Dungannon, Benburb, Blackwatertown, Bush, Coalisland, Killycolpy, Moy, Moygashel, Stewartstown | Dungannon y South Tyrone |
| BT74 | ENNISKILLEN | | Fermanagh |
| BT75 | FIVEMILETOWN | Fivemiletown, Clabby | Fermanagh |
| BT76 | CLOGHER | Clogher | Dungannon y South Tyrone |
| BT77 | AUGHER | Augher | Dungannon y South Tyrone |
| BT78 | OMAGH | Omagh, Dromore, Drumquin, Eskra, Fintona, Killynure, Newtownstewart, Seskanore, Trillick | Omagh |
| BT79 | OMAGH | Omagh, Drumlea, Glengawna, Gortin, Mountfield, Plumbridge, Rosnamuck, Sheskinshule, Sixmilecross | Omagh |
| BT80 | COOKSTOWN | Cookstown, Coagh, Tullyhogue | Cookstown |
| BT81 | CASTLEDERG | Castlederg, Aghyaran, Clare, Garvetagh, Killen, Killeter, Mournebeg, Spamount | Strabane |
| BT82 | STRABANE | Strabane, Artigarvan, Ballymagorry, Bready, Clady, Douglas Bridge, Dunamanagh, Sion Mills, Victoria Bridge | Strabane |
| BT92 | ENNISKILLEN | Lisnaskea | Fermanagh |
| BT93 | ENNISKILLEN | Belleek | Fermanagh |
| BT94 | ENNISKILLEN | Irvinestown | Fermanagh |
