<P> All Protestant denominations accounted for 51.3 % , while the Catholic Church by itself , at 23.9 % , was the largest individual denomination . A 2008 Pew study categorizes white evangelical Protestants , 26.3 % of the population , as the country 's largest religious cohort ; another study in 2004 estimates evangelical Protestants of all races at 30 -- 35 % . The nation 's second - largest church and the single largest Protestant denomination is the Southern Baptist Convention . The United Methodist Church is the third largest church and the largest mainline Protestant denomination in the United States . The Church of Jesus Christ of Latter - day Saints ( Mormons ) is the fourth - largest church in the United States and the largest church originating in the U.S. The Church of God in Christ is the fifth - largest denomination , the largest Pentecostal church , and the largest traditionally African - American denomination in the nation . Among Eastern Christian denominations , there are several Eastern Orthodox and Oriental Orthodox churches , with just below 1 million adherents in the US , or 0.4 % of the total population . </P>
what is the largest pentecostal denomination in the united states
The Church of God in Christ