Ulster (/ËÊlstÉr/; Irish: Ulaidh [ËÊlË iË, ËÊlË É] or CĂșige Uladh [ËkuËÉÉ ËÊlË É, - ËÊlË uË]; Ulster Scots: UlstĂšr or Ulster) is one of the four historical provinces of Ireland, located in the northern part of the island. It is made up of nine counties, with six of these comprising Northern Ireland (a part of the United Kingdom), while the remaining three are in the Republic of Ireland.
It is the second-largest (after Munster) and second-most populous (after Leinster) of Ireland's four traditional provinces, with Belfast being its biggest city. Unlike the other provinces, Ulster has a high percentage of Protestants, making up almost half of its population. English is the main language and Ulster English the main dialect. A minority also speak Irish, and there are GaeltachtaĂ (Irish-speaking regions) in County Donegal which is home to a quarter of the total Gaeltacht population of the Republic of Ireland. There are also large Irish-speaking networks in southern County Londonderry and in the Gaeltacht Quarter, Belfast. Ulster-Scots is also spoken extensively in the counties Antrim, Down, Londonderry, Tyrone and Donegal. Lough Neagh, in the east, is the largest lake in the British Isles, while Lough Erne in the west is one of its largest lake networks. The main mountain ranges are the Mournes, Sperrins, Blue Stack (Croaghgorms) and Derryveagh Mountains.