The largest denominations by number of adherents in 2014 were the Roman Catholic Church with 181,434 members; the Evangelical Lutheran Church in America (ELCA) with 121,871 members; and the United Methodist Church (UMC) with 37,280 members. (Both the ELCA and UMC are specific denominations within the broader terms 'Lutheran' and 'Methodist', respectively.) The results of a 2001 survey, in which South Dakotans were asked to identify their religion, include:
• Protestant (61%)
o Lutheran (27%)
o Methodist (13%)
o Baptist (4%)
o Presbyterian (4%)
o Other Protestant (6%)
o Non-denominational Christian (7%)
• Roman Catholic (25%)
• Not religious (8%)
• Non-Christian religions (3%)
• Refused to answer (2%)
• Protestant (61%)
o Lutheran (27%)
o Methodist (13%)
o Baptist (4%)
o Presbyterian (4%)
o Other Protestant (6%)
o Non-denominational Christian (7%)
• Roman Catholic (25%)
• Not religious (8%)
• Non-Christian religions (3%)
• Refused to answer (2%)