County Membership Report
 Maps and Reports > Select County > County Report
Search Maps & Reports:

Ada County, Idaho

Religious Traditions, 2010

52,126 252 22,441 420 26,302 67,288 223,536
Evangelical Protestant Black Protestant Mainline Protestant Orthodox Catholic 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]

Reports


Religious Bodies Tradition Family Congregations Adherents Adherence Rate
American Baptist Association, The Evangelical Protestant Baptist 1 24 0.1
American Baptist Churches in the USA Mainline Protestant Baptist 7 2,673 6.8
Anglican Church in North America Evangelical Protestant Episcopalianism/Anglicanism 2 --- ---
Antiochian Orthodox Christian Archdiocese of North America, The Orthodox Eastern Liturgical (Orthodox) 1 50 0.1
Assemblies of God Evangelical Protestant Pentecostal 10 4,256 10.8
Bahá'í Other Other Groups 2 209 0.5
Buddhism, Mahayana Other Other Groups 4 1,271 3.2
Buddhism, Theravada Other Other Groups 1 300 0.8
Buddhism, Vajrayana Other Other Groups 1 36 0.1
Calvary Chapel Fellowship Churches Evangelical Protestant Pentecostal 5 --- ---
Catholic Church Catholic Catholicism 9 26,302 67.0
Christian and Missionary Alliance, The Evangelical Protestant Holiness 2 65 0.2
Christian Brethren Evangelical Protestant Ind. Fundamentalist 1 --- ---
Christian Church (Disciples of Christ) Mainline Protestant Baptist 3 1,193 3.0
Christian Churches and Churches of Christ Evangelical Protestant Baptist 8 6,802 17.3
Christian Methodist Episcopal Church Black Protestant Methodist/Pietist 2 252 0.6
Church of Christ, Scientist Other Christian Science 1 --- ---
Church of God (Anderson, Indiana) Evangelical Protestant Holiness 1 828 2.1
Church of God of Prophecy Evangelical Protestant Pentecostal 1 73 0.2
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 132 61,860 157.7
Church of the Brethren Evangelical Protestant European Free-Church 2 189 0.5
Church of the Nazarene Evangelical Protestant Holiness 8 3,725 9.5
Church of the United Brethren in Christ Evangelical Protestant Methodist/Pietist 1 23 0.1
Churches of Christ Evangelical Protestant Baptist 3 800 2.0
Communion of Reformed Evangelical Churches Evangelical Protestant Presbyterian-Reformed 1 --- ---
Community of Christ Other Latter-day Saints 1 128 0.3
Conservative Baptist Association of America Evangelical Protestant Baptist 1 --- ---
Converge Worldwide/Baptist General Conference Evangelical Protestant Baptist 1 90 0.2
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 4 2,293 5.8
Evangelical Covenant Church, The Evangelical Protestant Methodist/Pietist 1 79 0.2
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist 1 85 0.2
Evangelical Friends Church International* Evangelical Protestant European Free-Church 4 911 2.3
Evangelical Lutheran Church in America Mainline Protestant Lutheran 5 2,427 6.2
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 4 284 0.7
Free Methodist Church of North America Evangelical Protestant Holiness 1 401 1.0
General Association of Regular Baptist Churches Evangelical Protestant Baptist 4 --- ---
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) 1 130 0.3
Hindu, Indian-American Hindu Temple Assoc. Other Other Groups 1 1,562 4.0
Hindu, Post Renaissance Other Other Groups 1 16 0.0
Independent Baptist Fellowship International Evangelical Protestant Baptist 1 --- ---
Independent Yearly Meetings of Friends* Mainline Protestant European Free-Church 1 15 0.0
International Churches of Christ Evangelical Protestant Baptist 1 90 0.2
Jehovah's Witnesses Other Adventist 5 --- ---
Korean Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed 1 --- ---
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 4 1,887 4.8
Mennonite Church USA Evangelical Protestant European Free-Church 2 101 0.3
Metropolitan Community Churches, Universal Fellowship of Mainline Protestant Other Groups 1 24 0.1
Muslim Estimate Other Other Groups 3 924 2.4
National Association of Free Will Baptists Evangelical Protestant Baptist 1 53 0.1
New Apostolic Church of North America, National Organization of the Other Other Groups 1 --- ---
Non-denominational Evangelical Protestant
----
43 22,247 56.7
Orthodox Judaism Other Judaism 1 60 0.2
Orthodox Presbyterian Church, The Evangelical Protestant Presbyterian-Reformed 1 46 0.1
Pentecostal Church of God Evangelical Protestant Pentecostal 1 109 0.3
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 5 1,835 4.7
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed 1 182 0.5
Reform Judaism Other Judaism 1 575 1.5
Reformed Church in America Mainline Protestant Presbyterian-Reformed 1 219 0.6
Russian Orthodox Church Outside of Russia Orthodox Eastern Liturgical (Orthodox) 1 100 0.3
Salvation Army Evangelical Protestant Holiness 1 291 0.7
Serbian Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) 1 140 0.4
Seventh-day Adventist Church Evangelical Protestant Adventist 8 2,219 5.7
Southern Baptist Convention Evangelical Protestant Baptist 11 2,445 6.2
Unitarian Universalist Association of Congregations Other Liberal 1 343 0.9
United Church of Christ Mainline Protestant Presbyterian-Reformed 2 528 1.3
United Methodist Church, The Mainline Protestant Methodist/Pietist 8 11,234 28.6
United Pentecostal Church International Evangelical Protestant Pentecostal 3 --- ---
United Reformed Churches in North America Evangelical Protestant Presbyterian-Reformed 1 --- ---
Vineyard USA Evangelical Protestant Pentecostal 2 3,345 8.5
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran 2 476 1.2
Zoroastrian Other Other Groups 0 4 0.0
Totals: 355 168,829  

The population of Ada County, Idaho was 392,365 in 2010; in 2000 it was 300,904. The total population changed 30.4%. The adherent totals of the religious groups listed above (168,829) included 43.0% 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 www.usreligioncensus.org for those who are interested in these trends.

Source

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.