Webster Dictionary(0.00 / 0 votes)Rate this definition: 1  Hypo-. a prefix signifying a less quantity, or a low state or degree, of that denoted by the word with which it is joined, or position under or beneath. 2  Hypo-.
Confidence votes 25. St Patrick's Cathedral in New York City. ***Actually, the Basilica of the National Shrine of the Immaculate Conception in DC is larger than St. Patrick's in NYC. The National Shrine is the largest Roman Catholic church in the U.S., and one of the 10 largest Roman Catholic churches in the world.
Catholicism is the second largest religious tradition in the United States at roughly 25% of the country's population. The five most Catholic states in the U.S., according to a recent Gallup survey, are all on the East Coast: Rhode Island, New Jersey, Massachusetts, Connecticut and New York. The least Catholic states are mostly in the South. Rhode Island's population is 54% Catholic, more than twice the national average. As Gallup notes, the most Catholic states tend to be the least Protestant states, and vice versa.