Largest Non-Christian Group by State

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The most widespread religion in the United States is Christianity, covering the majority of the population (74 percent of adults in 2016). Christians are the biggest religious population in all 3,143 counties in the United States (Association of Statisticians of American Religious Bodies). About 49 percent of Americans are Protestants, 23 percent are Catholics, 2 percent are Mormons.

Top 5 largest Christian denominations:

1. The Catholic Church – 68 million members
2. The Southern Baptist Convention – 16 million members
3. The United Methodist Church – 8 million members
4. The Church of Jesus Christ of Latter-day Saints – 6 million members
5. The Church of God in Christ – 5 million members

In the United States, 20 thousand Muslims convert to Christianity annually.