Baptist makes up the majority of protestant religion in the USA, but it really varies from state to state, like how in states like Utah, Mormonism is much higher then anywhere else, or in New York, were Catholicism is high, and how in the great lake states, you'll find more Lutherans then any were else. Also, in places like Alaska, there are more atheist, or local religions then anywhere else in the USA.
The majority of Americans (76% to 80%) identify themselves as Protestants or Catholics, accounting for 51% and 25% of the population respectively, according to one survey by Trinity College. Other religions including Judaism, Buddhism, Islam, Hindu collectively make up about 5% of the adult population. Another 15% of the adult population claim no religious affiliation. When asked, about 5.2% said they did not know, or refused to reply. According to the American Religious Identification Survey, religious belief varies considerably by region. The lowest rate is in the West with 59% reporting a belief in God, and the highest rate in the South at 86%.