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 the United States
A poll by The Barna Group in 2004 found Catholic ethnicity to be 60% non-Hispanic white (generally of mixed ethnicity, but almost always includes at least one Catholic ethnicity such as Irish, Italian, German, Polish, or French), 31% Hispanic of any nationality (mostly Mexicans but also many Cubans, Puerto Ricans, Dominicans, Central Americans and Colombians among others), 4% Black [including Africans, Haitians, black Latino and Caribbean], and 5% other ethnicity (mostly Filipinos, Vietnamese and other Asian Americans, Americans who are multiracial and have mixed ethnicities, and American Indians). Among the non-Hispanic whites, about 16 million Catholics identify as being of Irish descent, about 13 million as German, about 12 million as Italian, about 7 million as Polish, and about 5 million as French (note that many identify with more than one ethnicity). The roughly 7.8 million Catholics who are converts (mainly from Protestantism, with a smaller number from irreligion or other religions) are also mostly non-Hispanic white, including many people of British, Dutch, and Scandinavian ancestry.