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Religious Traditions, 2010

121,064 331 76,869 565 127,612 50,535 612,439
Evangelical Protestant Black Protestant Mainline Protestant Orthodox Catholic Other Unclaimed

Congregational adherents include all full members, their children, and others who regularly attend services. The 2010 reports contain incomplete counts of congregations and adherents belonging to the eight largest historically African-American denominations. These denominations are not included in the 2000 reports and are largely missing from the 1990 and 1980 reports.
[More information on the data sources]


Religious Bodies Tradition Family Congregations Adherents Adherence Rate
American Baptist Association, The Evangelical Protestant Baptist 8 500 0.6
American Baptist Churches in the USA Mainline Protestant Baptist 26 4,427 5.6
Apostolic Lutheran Church of America Evangelical Protestant Lutheran 1 24 0.0
Assemblies of God Evangelical Protestant Pentecostal 73 10,866 13.8
Association of Free Lutheran Congregations Evangelical Protestant Lutheran 4 330 0.4
Catholic Church Catholic Catholicism 229 140,415 178.5
Christian and Missionary Alliance, The Evangelical Protestant Holiness 32 3,424 4.4
Christian Brethren Evangelical Protestant Ind. Fundamentalist 6 215 0.3
Christian Church (Disciples of Christ) Mainline Protestant Restoration Movement 19 4,123 5.2
Christian Churches and Churches of Christ Evangelical Protestant Restoration Movement 20 2,439 3.1
Christian Reformed Church in North America Evangelical Protestant Presbyterian-Reformed 6 1,758 2.2
Church of God (Anderson, Indiana) Evangelical Protestant Holiness 7 1,335 1.7
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 15 627 0.8
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 101 26,035 33.1
Church of the Brethren Evangelical Protestant European Free-Church 2 80 0.1
Church of the Lutheran Brethren of America Evangelical Protestant Lutheran 4 283 0.4
Church of the Lutheran Confession Evangelical Protestant Lutheran 1 33 0.0
Church of the Nazarene Evangelical Protestant Holiness 24 2,770 3.5
Churches of Christ Evangelical Protestant Restoration Movement 38 2,189 2.8
Conservative Baptist Association of America Evangelical Protestant Baptist 4 406 0.5
Conservative Congregational Christian Conference Evangelical Protestant Presbyterian-Reformed 1 33 0.0
Converge Worldwide/Baptist General Conference Evangelical Protestant Baptist 3 478 0.6
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 46 8,279 10.5
Evangelical Church, The Evangelical Protestant Holiness 20 1,599 2.0
Evangelical Covenant Church, The Evangelical Protestant Methodist/Pietist 4 410 0.5
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist 6 162 0.2
Evangelical Lutheran Church in America Mainline Protestant Lutheran 151 52,891 67.2
Fellowship of Evangelical Bible Churches Evangelical Protestant European Free-Church 1 130 0.2
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 7 615 0.8
Free Methodist Church of North America Evangelical Protestant Holiness --- --- ---
Friends (Quakers) Mainline Protestant European Free-Church 1 13 0.0
Jewish Other Judaism 1 110 0.1
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 58 16,149 20.5
Mennonite Church Evangelical Protestant European Free-Church 4 251 0.3
Mennonite Church, The General Conference Evangelical Protestant European Free-Church 7 551 0.7
Metropolitan Community Churches, Universal Fellowship of Mainline Protestant Other Groups 0 40 0.1
National Association of Congregational Christian Churches Mainline Protestant Presbyterian-Reformed 4 212 0.3
North American Baptist Conference Evangelical Protestant Baptist 4 661 0.8
Open Bible Standard Churches, Inc. Evangelical Protestant Pentecostal 4 640 0.8
Orthodox Presbyterian Church, The Evangelical Protestant Presbyterian-Reformed 3 69 0.1
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 53 13,593 17.3
Reformed Church in America Mainline Protestant Presbyterian-Reformed 1 217 0.3
Salvation Army Evangelical Protestant Holiness 8 1,237 1.6
Seventh-day Adventist Church Evangelical Protestant Adventist 37 3,571 4.5
Southern Baptist Convention Evangelical Protestant Baptist 46 8,515 10.8
U.S. Mennonite Brethren Evangelical Protestant European Free-Church 3 237 0.3
Unitarian Universalist Association of Congregations Other Liberal 5 227 0.3
United Church of Christ Mainline Protestant Presbyterian-Reformed 41 9,268 11.8
United Methodist Church, The Mainline Protestant Methodist/Pietist 121 24,767 31.5
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran 13 1,097 1.4
Totals: 1,273 348,301  

The population of Montana was 786,690 in 1980. The adherent totals of the religious groups listed above (348,301) included 44.3% of the total population in 1980.

* In an effort to better match the ASARB standards for adherents, a few religious bodies changed the way their adherents were reported in 2010, including the Catholic Church, Amish groups, Friends groups, Jewish groups, the Church of Jesus Christ of Latter-day Saints, Non-denominational Christian Churches, and the United Methodist Church. This change does not affect any of the data in the newly released 2010 U.S. Religion Census: Religious Congregations & Membership Study. In fact, the data for these groups are now more comparable to that of other bodies than it was in previous decadal reports.

However, the change in methodology can distort assessments on growth or decline between 2000 and 2010 for each of these groups. County-level 2000 data using the new methodology are not readily available. ASARB staff has adjusted some 2000 county-level adherent statistics to allow for a more accurate picture on growth or decline. The revised maps and charts are now available on-line at for those who are interested in these trends.


2010 data were collected by the Association of Statisticians of American Religious Bodies (ASARB) and include statistics for 236 religious groups, providing information on the number of their congregations and adherents within each state and county in the United States. Clifford Grammich, Kirk Hadaway, Richard Houseal, Dale E. Jones, Alexei Krindatch, Richie Stanley and Richard H. Taylor supervised the collection. These data originally appeared in 2010 U.S. Religion Census: Religious Congregations & Membership Study, published by the Association of Statisticians of American Religious Bodies (ASARB). [More information on the data collection]

The adherence rate provides the number of adherents of a particular group per 1,000 population. For example, in 2010 the Episcopal Church had an adherence rate of 7.6 in Autauga County, Alabama. This means that about 8 out of every 1,000 people in Autauga County were Episcopalian.

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