Ulster
County Population Area
County Antrim ( Contae Aontroma ; Coontie Anthrim/Antrìm/Antrim/Entrim ) 618,108 3,046 km ( 1,176 sq mi )
County Armagh ( Contae Ard Mhacha ; Coontie Airmagh/Armagh ) 174,792 1,254 km ( 484 sq mi )
County Cavan ( Contae an Chabháin ) 73,183 1,931 km ( 746 sq mi )
County Donegal ( Contae Dhún na nGall/Thír Chonaill ; Coontie Dunnygal/Dinnygal ) 161,137 4,861 km ( 1,877 sq mi )
County Down ( Contae an Dúin ; Coontie Doon/Doun ) 531,665 2,466 km ( 952 sq mi )
County Fermanagh ( Contae Fhear Manach ; Coontie Fermanagh/Fermanay ) 61,170 1,691 km ( 653 sq mi )
County Londonderry ( Contae Dhoire ; Coontie Loonenderrie ) 247,132 2,075 km ( 801 sq mi )
County Monaghan ( Contae Mhuineacháin ) 60,483 1,295 km ( 500 sq mi )
County Tyrone ( Contae Thír Eoghain ; Coontie Tyrone/Owenslann ) 177,986 3,263 km ( 1,260 sq mi )
Grand Total 2,105,656 21,882 km ( 8,449 sq mi )
Geography and political sub-divisions -- County-based sub-divisions
Ulster (/ˈʌlstər/; Irish: Ulaidh [ˈʊlˠəi] or Cúige Uladh [ˌkuːɟə ˈʊlˠə]; Ulster Scots: Ulstèr or Ulster) is one of the four traditional Irish provinces, situated in the north of Ireland. It is made up of nine counties: six of these constitute Northern Ireland (a part of the United Kingdom); 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 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 Gaeltacht (Irish-speaking regions) in southern County Londonderry, the Gaeltacht Quarter of Belfast and in Donegal, where 25% of the total Gaeltacht population of Ireland is located. 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, Croaghgorms and Derryveagh Mountains. Historically, Ulster lay at the heart of the Gaelic world made up of Gaelic Ireland, Scotland and the Isle of Man. According to tradition, in ancient Ireland it was one of the fifths (Irish: cúige) ruled by a rí ruirech, or king of over-kings. It is named after the overkingdom of Ulaid, in the east of the province, which was in turn named after the Ulaid folk. The other overkingdoms in Ulster were Airgíalla and Ailech.