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Twin Falls County (Idaho)

Religious Traditions, 2010

8,520 179 4,632 5,826 51 19,451 38,571
Evangelical Protestant Black Protestant Mainline Protestant Catholic Orthodox 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
Church of God in Christ Black Protestant Pentecostal 1 179 2.32
Catholic Church Catholic Catholicism 2 5,826 75.44
Assemblies of God Evangelical Protestant Pentecostal 6 991 12.83
Calvary Chapel Fellowship Churches Evangelical Protestant Pentecostal 2 --- ---
Christian and Missionary Alliance, The Evangelical Protestant Holiness 1 163 2.11
Christian Churches and Churches of Christ Evangelical Protestant Baptist 4 683 8.84
Church of God in Christ, Mennonite Evangelical Protestant European Free-Church 2 360 4.66
Church of God of Prophecy Evangelical Protestant Pentecostal 1 24 0.31
Church of the Brethren Evangelical Protestant European Free-Church 1 51 0.66
Church of the Nazarene Evangelical Protestant Holiness 4 1,100 14.24
Churches of Christ Evangelical Protestant Baptist 3 143 1.85
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 1 42 0.54
General Association of Regular Baptist Churches Evangelical Protestant Baptist 1 --- ---
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 5 1,666 21.57
Mennonite Church USA Evangelical Protestant European Free-Church 1 96 1.24
National Association of Free Will Baptists Evangelical Protestant Baptist 2 107 1.39
Non-denominational Evangelical Protestant
8 1,905 24.67
Pentecostal Church of God Evangelical Protestant Pentecostal 1 109 1.41
Salvation Army Evangelical Protestant Holiness 1 350 4.53
Seventh-day Adventist Church Evangelical Protestant Adventist 3 398 5.15
Southern Baptist Convention Evangelical Protestant Baptist 5 332 4.30
United Pentecostal Church International Evangelical Protestant Pentecostal 2 --- ---
United Reformed Churches in North America Evangelical Protestant Presbyterian-Reformed 1 --- ---
American Baptist Churches in the USA Mainline Protestant Baptist 5 824 10.67
Christian Church (Disciples of Christ) Mainline Protestant Baptist 1 168 2.18
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 2 450 5.83
Evangelical Lutheran Church in America Mainline Protestant Lutheran 1 166 2.15
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 3 410 5.31
Reformed Church in America Mainline Protestant Presbyterian-Reformed 1 1,633 21.14
United Methodist Church, The Mainline Protestant Methodist/Pietist 5 981 12.70
Antiochian Orthodox Christian Archdiocese of North America, The Orthodox Eastern Liturgical (Orthodox) 1 51 0.66
Bahá'í Other Other Groups 1 64 0.83
Church of Christ, Scientist Other Christian Science 1 --- ---
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 43 19,000 246.02
Community of Christ Other Latter-day Saints 2 256 3.31
Jehovah's Witnesses Other Adventist 2 --- ---
Muslim Estimate Other Other Groups 1 100 1.29
Unitarian Universalist Association of Congregations Other Liberal 1 31 0.40
Totals: 128 38,659  

The population of Twin Falls County, Idaho was 77,230 in 2010; in 2000 it was 64,284. The total population changed 20.1%. The adherent totals of the religious groups listed above (38,659) included 50.1% of the total population in 2010.

* 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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