Research on USA church
" . . . Americans are less likely to attend religious services than 10 years ago but that the remaining faithful are turning to conservative Protestant, Catholic and Mormon churches.
Nationwide, Catholics remain the largest religious group in the country, with more than 62 million "ahderents" -- a category devised to reconcile differences in the way denominations count members.
The Southern Baptist Convention is second with 19.8 million adherents, followed by the United Methodist Church, with 10.3 million; an estimated 6.1 million Jews, observant and non-observant; the Evangelical Lutheran Church in America, 5.1 million; Mormons, 4.2 million; the Presbyterian Church (USA), 3.1 million; and the Assemblies of God, 2.5 million."