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.
Catholic Church in Scotland
In 2001, Catholics were a minority in each of Scotland's 32 council areas but in a few parts of the country their numbers rivalled those of the official Church of Scotland. The most Catholic part of the country is composed of the western Central Belt council areas near Glasgow. In Inverclyde, 38.3% of persons responding to the 2001 Scottish Census reported themselves to be Catholic compared to 40.9% as adherents of the Church of Scotland. North Lanarkshire also already had a large Catholic minority at 36.8% compared to 40.0% in the Church of Scotland. Following in order were West Dunbartonshire (35.8%), Glasgow City (31.7%), Renfrewshire (24.6%), East Dunbartonshire (23.6%), South Lanarkshire (23.6%) and East Renfrewshire (21.7%).