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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
Catholic Church Catholic Catholicism 3 5,740 89.29
Assemblies of God Evangelical Protestant Pentecostal 6 1,015 15.79
Calvary Chapel Fellowship Churches Evangelical Protestant Pentecostal 1 --- ---
Christian and Missionary Alliance, The Evangelical Protestant Holiness 2 20 0.31
Christian Churches and Churches of Christ Evangelical Protestant Baptist 4 898 13.97
Church of God in Christ, Mennonite Evangelical Protestant European Free-Church 2 290 4.51
Church of the Brethren Evangelical Protestant European Free-Church 1 23 0.36
Church of the Nazarene Evangelical Protestant Holiness 4 983 15.29
Churches of Christ Evangelical Protestant Baptist 3 255 3.97
Conservative Baptist Association of America Evangelical Protestant Baptist 1 90 1.40
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 1 165 2.57
General Association of Regular Baptist Churches Evangelical Protestant Baptist 1 119 1.85
Independent, Charismatic Churches Evangelical Protestant Pentecostal 1 800 12.44
International Pentecostal Holiness Church Evangelical Protestant Pentecostal 1 41 0.64
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 5 1,871 29.11
Mennonite Church USA Evangelical Protestant European Free-Church 1 103 1.60
Missionary Church, The Evangelical Protestant Holiness 1 43 0.67
National Association of Free Will Baptists Evangelical Protestant Baptist 2 105 1.63
Pentecostal Church of God Evangelical Protestant Pentecostal 1 17 0.26
Salvation Army Evangelical Protestant Holiness 1 191 2.97
Seventh-day Adventist Church Evangelical Protestant Adventist 2 330 5.13
Southern Baptist Convention Evangelical Protestant Baptist 3 456 7.09
American Baptist Churches in the USA Mainline Protestant Baptist 5 1,237 19.24
Christian Church (Disciples of Christ) Mainline Protestant Baptist 1 168 2.61
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 1 523 8.14
Evangelical Lutheran Church in America Mainline Protestant Lutheran 1 293 4.56
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 3 598 9.30
Reformed Church in America Mainline Protestant Presbyterian-Reformed 1 1,329 20.67
United Methodist Church, The Mainline Protestant Methodist/Pietist 6 1,464 22.77
Bahá'í Other Other Groups 0 22 0.34
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 30 12,603 196.05
Community of Christ Other Latter-day Saints 2 158 2.46
Unitarian Universalist Association of Congregations Other Liberal 1 48 0.75
Totals: 98 31,998  

The population of Twin Falls County, Idaho was 64,284 in 2000; in 1990 it was 53,580. The total population changed 20.0%. The adherent totals of the religious groups listed above (31,998) included 49.8% of the total population in 2000.

* 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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