| Adherents (2020) | Answer | % Correct |
|---|---|---|
| 61,860,000 | Roman Catholic | 96%
|
| 6,720,000 | Church of Jesus Christ of Latter-Day Saints | 74%
|
| 17,650,000 | Southern Baptist Convention | 63%
|
| 1,580,000 | Episcopal Church | 60%
|
| 380,000 | Greek Orthodox Archdiocese of America | 58%
|
| 3,020,000 | Jehovah’s Witness | 39%
|
| 8,020,000 | United Methodist Church | 38%
|
| 1,490,000 | Presbyterian Church (U.S.A) | 30%
|
| 3,140,000 | Evangelical Lutheran Church in America | 27%
|
| 1,800,000 | Lutheran Church- Missouri Synod | 24%
|
| 1,420,000 | Churches of Christ | 22%
|
| 370,000 | Presbyterian Church in America | 22%
|
| 1,340,000 | Seventh-Day Adventist Church | 22%
|
| 320,000 | Amish Groups (undifferentiated) | 19%
|
| 1,060,000 | African Methodist Episcopal Church | 17%
|
| 3,090,000 | General Council of the Assemblies of God | 17%
|
| 920,000 | United Church of Christ | 16%
|
| 1,260,000 | American Baptist Churches USA | 13%
|
| 430,000 | Church of God (Anderson, IN) | 13%
|
| 870,000 | Church of God (Cleveland, TN) | 13%
|
| 400,000 | Christian Church (Disciples of Christ) | 12%
|
| 910,000 | Church of the Nazarene | 10%
|
| 310,000 | Wesleyan Church | 10%
|
| 410,000 | Wisconsin Evangelical Lutheran Synod | 10%
|
| 1,570,000 | National Baptist Convention, U.S.A. | 9%
|
| 920,000 | Church of God in Christ | 6%
|
| 1,380,000 | Christian Churches and Churches of Christ | 4%
|
| 410,000 | Christian and Missionary Alliance | 3%
|
| 360,000 | International Church of the Foursquare Gospel | 3%
|
| 2,430,000 | National Missionary Baptist Convention of America | 1%
|