Catholic Church Leads US Christian Groups by Membership Despite Having Fewer Churches

The Catholic Church remains America's largest Christian denomination with 61.9 million adherents, according to data from the U.S. Religion Census compiled by Visual Capitalist. Despite this membership lead, Catholics operate only about 19,400 congregations across the country.

The Southern Baptist Convention demonstrates a contrasting approach, maintaining 51,400 churches—the highest count among Christian groups—while serving significantly fewer members than the Catholic Church. This highlights fundamental structural differences in how major Christian denominations organize their communities.