There are 5 major settlements with city status in Northern Ireland. These are Armagh, Belfast, Derry, Lisburn and Newry.

Northern Ireland is composed of 26 districts, derived from the boroughs of Belfast and Londonderry and the counties of Antrim, Armagh, Down, Fermanagh, Londonderry, and Tyrone. Together they are commonly called Ulster, though the territory does not include the entire ancient province of Ulster. It is slightly larger than Connecticut.