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.
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Reports


Religious Bodies Theology Congregations Adherents % Change
American Baptist Churches in the USA Mainline Protestant -2 -2,773 -27.3%
Assemblies of God Evangelical Protestant +10 +4,964 36.0%
Baptist General Conference Evangelical Protestant 0 -671 -76.3%
Catholic Church Catholic -13 +56,950 77.1%
Christian and Missionary Alliance, The Evangelical Protestant -3 -682 -47.8%
Christian Church (Disciples of Christ) Mainline Protestant -2 -319 -7.4%
Christian Churches and Churches of Christ Evangelical Protestant +1 +314 4.2%
Christian Reformed Church in North America Evangelical Protestant -1 -223 -73.8%
Church of God (Anderson, Indiana) Evangelical Protestant -1 +144 21.0%
Church of God (Cleveland, Tennessee) Evangelical Protestant -1 +178 24.8%
Church of God in Christ, Mennonite Evangelical Protestant +3 +236 40.3%
Church of God of Prophecy Evangelical Protestant -1 -25 -7.6%
Church of Jesus Christ of Latter-day Saints, The Other Theology +184 +43,365 16.2%
Church of the Brethren Evangelical Protestant 0 +57 6.6%
Church of the Nazarene Evangelical Protestant -3 +1,760 13.0%
Churches of Christ Evangelical Protestant +2 +90 2.7%
Conservative Baptist Association of America Evangelical Protestant -3 n.a. n.a.
Conservative Congregational Christian Conference Evangelical Protestant +2 +196 35.7%
Episcopal Church Mainline Protestant 0 +906 14.3%
Evangelical Free Church of America, The Evangelical Protestant +3 +415 96.5%
Evangelical Lutheran Church in America Mainline Protestant +3 +476 3.7%
Free Methodist Church of North America Evangelical Protestant -1 +1,129 123.7%
Friends (Quakers) Mainline Protestant +5 -16 -0.7%
Greek Orthodox Archdiocese of America Orthodox 0 n.a. n.a.
Independent, Charismatic Churches Evangelical Protestant -1 +1,835 93.4%
Independent, Non-Charismatic Churches Evangelical Protestant +1 +4,664 324.8%
International Church of the Foursquare Gospel Evangelical Protestant +5 +1,075 65.4%
Jewish Estimate Other Theology 0 +730 228.1%
Lutheran Church--Missouri Synod Evangelical Protestant 0 -14 -0.1%
Mennonite Church USA Evangelical Protestant -3 -74 -9.9%
Missionary Church, The Evangelical Protestant 0 -19 -30.6%
National Association of Free Will Baptists Evangelical Protestant +2 -143 -30.8%
North American Baptist Conference Evangelical Protestant 0 -107 -24.5%
Pentecostal Church of God Evangelical Protestant -4 +32 4.0%
Presbyterian Church (U.S.A.) Mainline Protestant 0 -1,401 -12.6%
Reformed Church in America Mainline Protestant +1 +1,018 116.1%
Salvation Army, The Evangelical Protestant 0 +543 87.3%
Seventh-day Adventist Church Evangelical Protestant +4 -187 -2.3%
Southern Baptist Convention Evangelical Protestant +12 -346 -2.2%
Unitarian Universalist Association of Congregations Other Theology +1 +90 16.0%
United Church of Christ Mainline Protestant -2 -850 -31.2%
United Methodist Church, The Mainline Protestant -3 -3,296 -15.7%
Wesleyan Church, The Evangelical Protestant 0 +308 67.7%
Wisconsin Evangelical Lutheran Synod Evangelical Protestant +3 +265 155.9%
  Totals: +198 +110,594 +21.8%

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 adherent totals for 1990 (507,426) represent 50.4% of the 1990 population. The adherent totals for 2000 (627,262) include 48.5% of the 2000 population. There is sufficient data for 42 groups to calculate 1990-2000 change. These 42 groups had 506,269 adherents in 1990 and 616,863 adherents in 2000, for a change of 21.8%

Sources

The 2000 data were collected by the Association of Statisticians of American Religious Bodies (ASARB) and includes statistics for 149 religious groups, including number of churches and adherents. Dale E. Jones, Sherri Doty, Clifford Grammich, James E. Horsch, Richard Houseal, Mac Lynn, John P. Marcum, Kenneth M. Sanchagrin and Richard H. Taylor supervised the collection. These data originally appeared in Religious Congregations & Membership in the United States, 2000, published by the Glenmary Research Center.

The 1990 data were collected by the Association of Statisticians of American Religious Bodies (ASARB) and include statistics for 132 religious groups, including number of churches and adherents. Martin B. Bradley, Norman M. Green, Jr., Dale E. Jones, Mac Lynn, and Lou McNeil supervised the collection. These data originally appeared in Churches and Church Membership in the United States, 1990, published by the Glenmary Research Center.

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