The postal area BT (Belfast) comprises of the following post towns; these towns should be written in capital letters when used in addresses.

Country	Post Town	Postal District
Northern Ireland	Belfast	BT1 BT2 BT3 BT4 BT5 BT6 BT7 BT8 BT9 BT10 BT11 BT12 BT13 BT14 BT15 BT16 BT17
	Holywood	BT18
	Bangor	BT19 BT20
	Donaghadee	BT21
	Newtownards	BT22 BT23
	Ballynahinch	BT24
	Dromore	BT25
	Hillsborough	BT26
	Lisburn	BT27 BT28
	Belfast Crumlin	BT29
	Downpatrick	BT30
	Castlewellan	BT31
	Banbridge	BT32
	Newcastle	BT33
	Newry	BT34 BT35
	Newtownabbey	BT37
	Carrickfergus	BT38
	Ballyclare	BT39
	Larne	BT40
	Antrim	BT41
	Ballymena	BT42 BT43 BT44
	Magherafelt	BT45
	Maghera	BT46
	Derry	BT47 BT48
	Limavady	BT49
	Coleraine	BT51 BT52
	Ballymoney	BT53
	Ballycastle	BT54
	Portstewart	BT55
	Portrush	BT56
	Bushmills	BT57
	NI Businesses	BT58
	Armagh	BT60 BT61
	Craigavon	BT62 BT63 BT64 BT65 BT66 BT67
	Caledon	BT68
	Aughnacloy	BT69
	Dungannon	BT70 BT71
	Enniskillen	BT74
	Fivemiletown	BT75
	Clogher	BT76
	Augher	BT77
	Omagh	BT78 BT79
	Cookstown	BT80
	Castlederg	BT81
	Strabane	BT82
	Enniskillen	BT92 BT93 BT94

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