Catholic Church in Ireland
In the 2016 Irish census 78.3% of the population identified as Catholic in Ireland; numbering approximately 3.7 million people. Unlike Catholics in the United States, Ireland has seen a significant decline from the 84.2% who identified as Catholic in the 2011 census.
Ulster
, Northern Ireland has seven Roman Catholic members of parliament, all members of Sinn Féin (of a total of 18 from the whole of Northern Ireland) in the British House of Commons at Westminster; and the other three counties have one Protestant T.D. of the ten it has elected to Dáil Éireann, the Lower House of the Oireachtas, the parliament of the Republic of Ireland. At present (August 2007) County Donegal sends six T.D.'s to Dáil Éireann. The county is divided into two constituencies: Donegal North-East and Donegal South-West, each with three T.D.'s. County Cavan and County Monaghan form the one constituency called Cavan-Monaghan, which sends five T.D.'s to the Dáil (one of whom is a Protestant).