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Idaho - State Membership Report (2020)

Exact definitions of "congregations" and "adherents" vary by religious body. Congregations may be parishes, churches, synagogues, mosques, temples, or another site where a religious body has regularly scheduled worship services. Adherents generally are members, children who are not members, and others who are not members but are considered participants in the congregation.

[More information on the data sources]

Religious Bodies Tradition Family Congregations Adherents Adherence Rate
Church of Jesus Christ of Latter-day Saints Latter-day Saints Latter-day Saints (Mormonism) Family 1,184 462,069 251.25
Catholic Church Catholic Catholic Liturgical Family 98 203,790 110.81
Non-denominational Christian Churches Evangelical Protestant Other Groups Family 194 98,996 53.83
Christian Churches and Churches of Christ Evangelical Protestant Restorationists Family 25 27,442 14.92
Assemblies of God, General Council of the Evangelical Protestant Pentecostal Family 89 26,067 14.17
United Methodist Church Mainline Protestant Methodist Family 56 24,561 13.35
Church of the Nazarene Evangelical Protestant Holiness Family 53 23,106 12.56
Jehovah's Witnesses Jehovah's Witnesses Adventist Family 77 16,840 9.16
Seventh-day Adventist Church Evangelical Protestant Adventist Family 61 11,828 6.43
Southern Baptist Convention Evangelical Protestant Baptist Family 105 10,429 5.67
Lutheran Church-Missouri Synod (LCMS) Evangelical Protestant Lutheran Family 43 8,097 4.40
Evangelical Lutheran Church in America Mainline Protestant Lutheran Family 32 6,333 3.44
American Baptist Churches in the U.S.A. Mainline Protestant Baptist Family 31 5,504 2.99
Episcopal Church Mainline Protestant Anglican/Episcopal Family 32 4,813 2.62
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian/Reformed Family 40 3,961 2.15
Churches of Christ Evangelical Protestant Restorationists Family 40 2,906 1.58
Muslim Estimate Islam Islam Family 6 2,531 1.38
International Church of the Foursquare Gospel Evangelical Protestant Pentecostal Family 23 2,130 1.16
Church of God (Anderson, Indiana) Evangelical Protestant Holiness Family 10 2,086 1.13
Christian and Missionary Alliance Evangelical Protestant Holiness Family 8 1,951 1.06
Reformed Church in America Mainline Protestant Presbyterian/Reformed Family 3 1,897 1.03
Church of God in Christ, Mennonite Evangelical Protestant Mennonite/Amish Family 10 1,655 0.90
Evangelical Friends Church International Evangelical Protestant Friends/Brethren Family 11 1,493 0.81
Christian Church (Disciples of Christ) Mainline Protestant Restorationists Family 15 1,350 0.73
Hindu Yoga and Meditation Hinduism 3 1,247 0.68
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran Family 3 1,236 0.67
Association of Vineyard Churches Evangelical Protestant Pentecostal Family 5 1,092 0.59
Reform Judaism Judaism Judaism Family 2 1,080 0.59
Lutheran Congregations in Mission for Christ Evangelical Protestant Lutheran Family 8 990 0.54
Free Methodist Church – USA Evangelical Protestant Holiness Family 8 974 0.53
United Church of Christ Mainline Protestant Congregationalists (United Church of Christ) Family 11 895 0.49
Baha'i Faith Other Other Groups Family 10 871 0.47
Unitarian Universalist Association Other Christians Liberal Family 6 733 0.40
National Missionary Baptist Convention of America Black Protestant Baptist Family 4 700 0.38
United Reformed Churches in North America Evangelical Protestant Presbyterian/Reformed Family 4 677 0.37
Buddhism, Theravada Buddhism Buddhism Family 2 592 0.32
American Baptist Association Evangelical Protestant Baptist Family 3 574 0.31
Church of the Brethren Evangelical Protestant Friends/Brethren Family 6 543 0.30
Salvation Army Evangelical Protestant Holiness Family 8 524 0.28
Antiochian Orthodox Christian Archdiocese of North America Orthodox Eastern Liturgical (Orthodox) Family 4 486 0.26
Church of God in Christ Black Protestant Pentecostal Family 4 486 0.26
Mennonite Church, USA Evangelical Protestant Mennonite/Amish Family 5 471 0.26
Full Gospel Christian Assemblies International Evangelical Protestant Pentecostal Family 3 370 0.20
Buddhism, Vajrayana Buddhism Buddhism Family 3 320 0.17
Conservative Congregational Christian Conference Evangelical Protestant Presbyterian/Reformed Family 3 311 0.17
Unaffiliated Conservative Mennonite Evangelical Protestant Mennonite/Amish Family 2 282 0.15
Buddhism, Mahayana Buddhism Buddhism Family 5 228 0.12
Presbyterian Church in America Evangelical Protestant Presbyterian/Reformed Family 2 225 0.12
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal Family 12 215 0.12
Serbian Orthodox Church in North and South America Orthodox Eastern Liturgical (Orthodox) Family 1 200 0.11
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) Family 2 190 0.10
Maranatha Amish Mennonite Evangelical Protestant Mennonite/Amish Family 2 162 0.09
National Association of Free Will Baptists Evangelical Protestant Baptist Family 4 159 0.09
Fellowship of Evangelical Churches Evangelical Protestant Mennonite/Amish Family 1 158 0.09
Old German Baptist Brethren Church, New Conference Evangelical Protestant Friends/Brethren Family 2 154 0.08
Russian Orthodox Church Outside of Russia, The Orthodox Eastern Liturgical (Orthodox) Family 1 150 0.08
Wesleyan Church Evangelical Protestant Holiness Family 3 135 0.07
Western Conservative Mennonite Fellowship Evangelical Protestant Mennonite/Amish Family 2 99 0.05
Old German Baptist Brethren Church Evangelical Protestant Friends/Brethren Family 1 98 0.05
International Churches of Christ Evangelical Protestant Baptist Family 1 81 0.04
Church of the United Brethren in Christ, USA Evangelical Protestant Methodist Family 2 75 0.04
Amish Groups, undifferentiated Evangelical Protestant Mennonite/Amish Family 1 67 0.04
Ecumenical Catholic Communion Other Christians 1 60 0.03
Independent Yearly Meetings of Friends Mainline Protestant Friends/Brethren Family 3 44 0.02
Coptic Orthodox Church Orthodox Eastern Liturgical (Orthodox) Family 1 35 0.02
Pilgrim Mennonite Conference Evangelical Protestant Mennonite/Amish Family 1 34 0.02
Universal Fellowship of Metropolitan Community Churches Mainline Protestant Other Groups Family 1 24 0.01
Bruderhof Evangelical Protestant Communal Family 1 19 0.01
Christian Reformed Church in North America Evangelical Protestant Presbyterian/Reformed Family 1 0 0.00
Evangelical Presbyterian Church (1981) Evangelical Protestant Presbyterian/Reformed Family 5
Christadelphians Other Christians Other Groups Family 1
ECO: A Covenant Order of Evangelical Presbyterians Evangelical Protestant Presbyterian/Reformed Family 5
United Church of God Other Christians Adventist Family 3
Church of Christ Evangelical Protestant 1
The Church of God Evangelical Protestant 4
The Local Churches Evangelical Protestant 2
Bible Methodist Connection of Churches Evangelical Protestant Holiness Family 2
International Communion of the Charismatic Episcopal Church Evangelical Protestant Anglican/Episcopal Family 1
Unification Church Other Other Groups Family 1
Chabad Judaism Judaism 1
Remnant: Charity Ministries and related Evangelical Protestant Mennonite/Amish Family 1
Anglican Church in North America Evangelical Protestant Anglican/Episcopal Family 5
Converge Worldwide Evangelical Protestant Baptist Family 1
Baptist Missionary Association of America Evangelical Protestant Baptist Family 1
Bible Presbyterian Church (General Synod) Evangelical Protestant Presbyterian/Reformed Family 1
Calvary Chapel Evangelical Protestant Pentecostal Family 6
Church of Christ, Scientist Other Christians Christian Science Family 1
Unity Churches, Association of Other Christians Other Groups Family 3
Church of God of Prophecy Evangelical Protestant Pentecostal Family 14
Church of the Lutheran Confession Evangelical Protestant Lutheran Family 1
Communion of Reformed Evangelical Churches Evangelical Protestant Presbyterian/Reformed Family 5
Community of Christ Evangelical Protestant Latter-day Saints (Mormonism) Family 4
Evangelical Free Church of America Evangelical Protestant Methodist Family 9
Evangelical Methodist Church Evangelical Protestant Methodist Family 2
Grace Gospel Fellowship Evangelical Protestant Independent Fundamentalist Family 1
New Apostolic Church USA Other Christians Other Groups Family 2
North American Baptist Conference Evangelical Protestant Baptist Family 3
North American Lutheran Church Evangelical Protestant Lutheran Family 2
Open Bible Churches Evangelical Protestant Pentecostal Family 1
Orthodox Presbyterian Church Evangelical Protestant Presbyterian/Reformed Family 2
Pentecostal Church of God Evangelical Protestant Pentecostal Family 6
Christian Brethren (Plymouth Brethren) Evangelical Protestant Independent Fundamentalist Family 3
General Association of Regular Baptist Churches Evangelical Protestant Baptist Family 13
United Pentecostal Church International Evangelical Protestant Pentecostal Family 17
           

Religious Traditions (1980 - 2020), Percent of Population


The population of this state was 1,839,106 in 2020. The adherent totals of the religious groups listed above (969,901) included 52.7% of the total population in 2020. The adherence rate is the number of adherents of a given group per 1,000 people in the general population.

Note that data collection methods for religious bodies change over time, affecting the comparability of statistics. For further information, see the U.S. Religion Census website at https://www.usreligioncensus.org/.

The 2020 data were collected by the Association of Statisticians of American Religious Bodies (ASARB) and include data for 372 religious bodies or groups. Of these, the ASARB was able to gather data on congregations and adherents for 217 and on congregations only for 155.

[More information on the data sources]

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