State Membership Report
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Idaho

Denominational Groups, 2000

116,186 65,243 805 130,847 314,181 666,691
Evangelical Protestant Mainline Protestant Orthodox Catholic Other Unclaimed

Congregational "adherents" include all full members, their children, and others who regularly attend services. The historically African American denominations are not included in the 2000 congregation and membership totals. Many are also missing in 1990 and most historically African American denominations are missing in the 1980 reports.
[More information on the data sources]

Reports


Religious Bodies Theology Congregations Adherents Adherence Rate
Church of Jesus Christ of Latter-day Saints, The Other Theology 846 311,425 240.7
Catholic Church Catholic 102 130,847 101.1
Assemblies of God Evangelical Protestant 88 18,745 14.5
Southern Baptist Convention Evangelical Protestant 66 15,456 11.9
United Methodist Church, The Mainline Protestant 63 17,683 13.7
Church of the Nazarene Evangelical Protestant 51 15,320 11.8
Presbyterian Church (U.S.A.) Mainline Protestant 51 9,720 7.5
Seventh-day Adventist Church Evangelical Protestant 50 7,985 6.2
Lutheran Church--Missouri Synod Evangelical Protestant 43 13,289 10.3
Churches of Christ Evangelical Protestant 43 3,399 2.6
Evangelical Lutheran Church in America Mainline Protestant 43 13,187 10.2
Episcopal Church Mainline Protestant 38 7,244 5.6
American Baptist Churches in the USA Mainline Protestant 37 7,373 5.7
International Church of the Foursquare Gospel Evangelical Protestant 29 2,718 2.1
Christian Churches and Churches of Christ Evangelical Protestant 25 7,880 6.1
Friends (Quakers) Mainline Protestant 22 2,217 1.7
Christian Church (Disciples of Christ) Mainline Protestant 16 4,009 3.1
Calvary Chapel Fellowship Churches Evangelical Protestant 14 n.a. n.a.
General Association of Regular Baptist Churches Evangelical Protestant 13 1,693 1.3
United Church of Christ Mainline Protestant 13 1,876 1.5
Conservative Baptist Association of America Evangelical Protestant 12 1,596 1.2
Church of God (Cleveland, Tennessee) Evangelical Protestant 12 896 0.7
Community of Christ Evangelical Protestant 10 777 0.6
Bahá'í Other Theology 10 690 0.5
Church of God of Prophecy Evangelical Protestant 9 303 0.2
Church of God (Anderson, Indiana) Evangelical Protestant 9 829 0.6
Pentecostal Church of God Evangelical Protestant 9 824 0.6
American Baptist Association, The Evangelical Protestant 8 275 0.2
Free Methodist Church of North America Evangelical Protestant 8 2,042 1.6
Evangelical Free Church of America, The Evangelical Protestant 8 845 0.7
Church of the Brethren Evangelical Protestant 7 922 0.7
Salvation Army, The Evangelical Protestant 7 1,165 0.9
Christian and Missionary Alliance, The Evangelical Protestant 7 745 0.6
Vineyard USA Evangelical Protestant 6 2,949 2.3
Unitarian Universalist Association of Congregations Other Theology 6 653 0.5
National Association of Free Will Baptists Evangelical Protestant 6 322 0.3
Church of God in Christ, Mennonite Evangelical Protestant 6 822 0.6
International Pentecostal Holiness Church Evangelical Protestant 6 144 0.1
Mennonite Church USA Evangelical Protestant 5 675 0.5
Conservative Congregational Christian Conference Evangelical Protestant 4 745 0.6
Independent, Non-Charismatic Churches Evangelical Protestant 4 6,100 4.7
Wisconsin Evangelical Lutheran Synod Evangelical Protestant 4 435 0.3
Mennonite; Other Groups Evangelical Protestant 3 163 0.1
Reformed Church in America Mainline Protestant 3 1,895 1.5
Antiochian Orthodox Christian Archdiocese of North America, The Orthodox 3 346 0.3
Wesleyan Church, The Evangelical Protestant 3 763 0.6
Independent, Charismatic Churches Evangelical Protestant 3 3,800 2.9
Greek Orthodox Archdiocese of America Orthodox 2 459 0.4
Presbyterian Church in America Evangelical Protestant 2 117 0.1
Jewish Estimate Other Theology 2 1,050 0.8
Orthodox Presbyterian Church, The Evangelical Protestant 2 91 0.1
Muslim Estimate Other Theology 2 363 0.3
North American Baptist Conference Evangelical Protestant 2 329 0.3
United Reformed Churches in North America Evangelical Protestant 1 367 0.3
Universal Fellowship of Metropolitan Community Churches Mainline Protestant 1 39 0.0
Christian Reformed Church in North America Evangelical Protestant 1 79 0.1
Baptist General Conference Evangelical Protestant 1 208 0.2
Buddhism Other Theology 1 n.a. n.a.
Evangelical Covenant Church, The Evangelical Protestant 1 58 0.0
Old Order Amish Church Evangelical Protestant 1 76 0.1
Missionary Church, The Evangelical Protestant 1 43 0.0
International Churches of Christ Evangelical Protestant 1 196 0.2
Hindu Other Theology 1 n.a. n.a.
Reformed Baptist Churches Evangelical Protestant 1 n.a. n.a.
Russian Orthodox Church Outside of Russia Orthodox 1 n.a. n.a.
Totals (Unadjusted)*: 1,855 627,262  
Total (Adjusted)**:   693,628  
The population of these 44 counties (or equivalents) in 1990 was 1,006,749; in 2000 it was 1,293,953. The total population changed 28.5%. The unadjusted adherent totals of the religious groups listed above (627,262) include 48.5% of the total population in 2000. The adjusted total adherents (693,628) include 53.6% of the population.

Source

*The “Unadjusted Totals” come from the 1990 and 2000 data collected by representatives of the Association of Statisticians of American Religious Bodies (ASARB). While quite comprehensive, this data excludes most of the historically African-American denominations and some other major groups. As a result, these numbers will be an underestimate of the total adherence rate, particularly in areas with a large African-American population. The 2000 data included 149 religious groups and the final results are published in Religious Congregations and Membership in the United States 2000. Copyright © 2002, All rights reserved. The 1990 data included 132 groups and the final results are published in Churches and Church Membership in the United States 1990 Copyright © 1990, All rights reserved. Published by Glenmary Research Center, 1312 Fifth Ave., North, Nashville, TN 37208. www.glenmary.org [More information on the data collection]

**The “Adjusted Totals” include all adherents in the denominations counted by the Association of Statisticians of American Religious Bodies (ASARB) and estimates adherent totals for the historically African-American denominations and other religious groups not listed in the ASARB totals. An article by Roger Finke and Christopher P. Scheitle (2005) reviews how these estimates were computed.

The adherence rate provides the number of adherents of a particular group per 1,000 population. For example, in 2000 the Episcopal Church had an adherence rate of approximately 8 (8.1) in Autauga County, Alabama. This means that 8 out of every 1,000 people in Autauga County are Episcopalian.

[More information on the data source]