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Ada County, Idaho - County 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 164 71,340 144.13
Catholic Church Catholic Catholic Liturgical Family 7 67,703 136.78
Non-denominational Christian Churches Evangelical Protestant Other Groups Family 43 26,708 53.96
United Methodist Church Mainline Protestant Methodist Family 7 18,169 36.71
Christian Churches and Churches of Christ Evangelical Protestant Restorationists Family 7 9,927 20.06
Church of the Nazarene Evangelical Protestant Holiness Family 8 6,132 12.39
Jehovah's Witnesses Jehovah's Witnesses Adventist Family 18 4,056 8.19
Assemblies of God, General Council of the Evangelical Protestant Pentecostal Family 12 3,921 7.92
American Baptist Churches in the U.S.A. Mainline Protestant Baptist Family 5 2,587 5.23
Seventh-day Adventist Church Evangelical Protestant Adventist Family 8 2,500 5.05
Episcopal Church Mainline Protestant Anglican/Episcopal Family 4 2,388 4.82
Southern Baptist Convention Evangelical Protestant Baptist Family 13 2,207 4.46
Evangelical Lutheran Church in America Mainline Protestant Lutheran Family 5 2,190 4.42
Muslim Estimate Islam Islam Family 4 2,113 4.27
Lutheran Church-Missouri Synod (LCMS) Evangelical Protestant Lutheran Family 4 1,494 3.02
Hindu Yoga and Meditation Hinduism 3 1,247 2.52
Church of God (Anderson, Indiana) Evangelical Protestant Holiness Family 1 1,180 2.38
International Church of the Foursquare Gospel Evangelical Protestant Pentecostal Family 6 982 1.98
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian/Reformed Family 3 869 1.76
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran Family 2 854 1.73
Churches of Christ Evangelical Protestant Restorationists Family 4 794 1.60
Association of Vineyard Churches Evangelical Protestant Pentecostal Family 3 792 1.60
Evangelical Friends Church International Evangelical Protestant Friends/Brethren Family 4 601 1.21
Reform Judaism Judaism Judaism Family 1 540 1.09
United Church of Christ Mainline Protestant Congregationalists (United Church of Christ) Family 2 415 0.84
Unitarian Universalist Association Other Christians Liberal Family 1 363 0.73
United Reformed Churches in North America Evangelical Protestant Presbyterian/Reformed Family 2 348 0.70
Buddhism, Theravada Buddhism Buddhism Family 1 303 0.61
Christian Church (Disciples of Christ) Mainline Protestant Restorationists Family 4 301 0.61
Baha'i Faith Other Other Groups Family 3 251 0.51
Presbyterian Church in America Evangelical Protestant Presbyterian/Reformed Family 2 225 0.45
Church of the Brethren Evangelical Protestant Friends/Brethren Family 2 218 0.44
Serbian Orthodox Church in North and South America Orthodox Eastern Liturgical (Orthodox) Family 1 200 0.40
Christian and Missionary Alliance Evangelical Protestant Holiness Family 2 150 0.30
Full Gospel Christian Assemblies International Evangelical Protestant Pentecostal Family 1 150 0.30
Russian Orthodox Church Outside of Russia, The Orthodox Eastern Liturgical (Orthodox) Family 1 150 0.30
Antiochian Orthodox Christian Archdiocese of North America Orthodox Eastern Liturgical (Orthodox) Family 1 135 0.27
Buddhism, Vajrayana Buddhism Buddhism Family 1 120 0.24
Mennonite Church, USA Evangelical Protestant Mennonite/Amish Family 2 91 0.18
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) Family 1 90 0.18
Reformed Church in America Mainline Protestant Presbyterian/Reformed Family 1 88 0.18
Salvation Army Evangelical Protestant Holiness Family 1 83 0.17
International Churches of Christ Evangelical Protestant Baptist Family 1 81 0.16
Free Methodist Church – USA Evangelical Protestant Holiness Family 2 63 0.13
Wesleyan Church Evangelical Protestant Holiness Family 1 35 0.07
Coptic Orthodox Church Orthodox Eastern Liturgical (Orthodox) Family 1 35 0.07
Universal Fellowship of Metropolitan Community Churches Mainline Protestant Other Groups Family 1 24 0.05
Independent Yearly Meetings of Friends Mainline Protestant Friends/Brethren Family 1 12 0.02
The Local Churches Evangelical Protestant 1
The Church of God Evangelical Protestant 1
Church of Christ Evangelical Protestant 1
Unity Churches, Association of Other Christians Other Groups Family 1
Evangelical Free Church of America Evangelical Protestant Methodist Family 2
New Apostolic Church USA Other Christians Other Groups Family 1
Pentecostal Church of God Evangelical Protestant Pentecostal Family 1
Christian Brethren (Plymouth Brethren) Evangelical Protestant Independent Fundamentalist Family 1
Community of Christ Evangelical Protestant Latter-day Saints (Mormonism) Family 1
Communion of Reformed Evangelical Churches Evangelical Protestant Presbyterian/Reformed Family 1
Unification Church Other Other Groups Family 1
General Association of Regular Baptist Churches Evangelical Protestant Baptist Family 4
Church of God of Prophecy Evangelical Protestant Pentecostal Family 2
Church of Christ, Scientist Other Christians Christian Science Family 1
Calvary Chapel Evangelical Protestant Pentecostal Family 2
Evangelical Presbyterian Church (1981) Evangelical Protestant Presbyterian/Reformed Family 1
Chabad Judaism Judaism 1
Converge Worldwide Evangelical Protestant Baptist Family 1
International Communion of the Charismatic Episcopal Church Evangelical Protestant Anglican/Episcopal Family 1
United Pentecostal Church International Evangelical Protestant Pentecostal Family 3
Buddhism, Mahayana Buddhism Buddhism Family 2
Anglican Church in North America Evangelical Protestant Anglican/Episcopal Family 2
           

Religious Traditions (1980 - 2020), Percent of Population


The population of this county was 494,967 in 2020. The adherent totals of the religious groups listed above (235,225) included 47.5% 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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