Ulster capital Belfast
Geography and political sub-divisions
Ulster has a population of just over 2 million people and an area of 22,067 square kilometres (8,520 sq mi). About 62% of the area of Ulster is in the UK while the remaining 38% is in the Republic of Ireland. Ulster's biggest city, Belfast, has an urban population of over half a million inhabitants, making it the second-largest city on the island of Ireland and the 10th largest urban area in the UK. 
Six of Ulster's nine counties, Antrim, Armagh, Down, Fermanagh, Londonderry and Tyrone, including the former parliamentary boroughs of Belfast and Londonderry, form Northern Ireland which remained part of the United Kingdom after the partition of Ireland in 1921. Three Ulster counties – Cavan, Donegal and Monaghan – form part of the Republic of Ireland. About half of Ulster's population lives in counties Antrim and Down. Across the nine counties, according to the aggregate UK 2011 Census for Northern Ireland, and the ROI 2011 Census for counties Cavan, Donegal and Monaghan, there is a Roman Catholic majority over Protestant of 50.8% to 42.7%.While the traditional counties continue to demarcate areas of local government in the Republic of Ireland, this is no longer the case in Northern Ireland. Since 1974, the traditional counties have a ceremonial role only. Local government in Northern Ireland is today demarcated by 11 districts.
seat of government administrative center headquarters main city principal city