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United States

Religious Traditions, 2010

50,013,107 4,877,067 22,568,258 1,056,535 58,934,906 13,146,919 158,148,746
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
Catholic Church Catholic Catholicism 21,791 62,035,042 220.4
Southern Baptist Convention Evangelical Protestant Baptist 41,514 19,881,467 70.6
United Methodist Church, The Mainline Protestant Methodist/Pietist 35,721 10,350,629 36.8
Jewish Other Judaism 3,727 6,141,325 21.8
Evangelical Lutheran Church in America Mainline Protestant Lutheran 10,739 5,113,418 18.2
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 11,515 4,224,026 15.0
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 11,106 3,141,566 11.2
Assemblies of God Evangelical Protestant Pentecostal 11,880 2,561,998 9.1
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 6,077 2,521,062 9.0
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 7,314 2,314,756 8.2
American Baptist Churches in the USA Mainline Protestant Baptist 5,555 1,767,462 6.3
United Church of Christ Mainline Protestant Presbyterian-Reformed 5,863 1,698,918 6.0
Churches of Christ Evangelical Protestant Baptist 13,027 1,645,584 5.8
Muslim Estimate Other Other Groups 1,209 1,559,294 5.5
Christian Churches and Churches of Christ Evangelical Protestant Baptist 5,471 1,439,253 5.1
Independent, Non-Charismatic Churches Evangelical Protestant
----
1,084 1,116,769 4.0
Christian Church (Disciples of Christ) Mainline Protestant Baptist 3,339 1,017,784 3.6
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 5,612 974,198 3.5
Independent, Charismatic Churches Evangelical Protestant Pentecostal 621 935,168 3.3
Seventh-day Adventist Church Evangelical Protestant Adventist 4,507 923,046 3.3
Church of the Nazarene Evangelical Protestant Holiness 5,209 907,331 3.2
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) 518 427,659 1.5
Salvation Army Evangelical Protestant Holiness 1,332 415,060 1.5
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran 1,277 405,078 1.4
Wesleyan Church, The Evangelical Protestant Holiness 1,657 381,459 1.4
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 1,844 347,367 1.2
Reformed Church in America Mainline Protestant Presbyterian-Reformed 896 335,677 1.2
Christian and Missionary Alliance, The Evangelical Protestant Holiness 1,878 331,106 1.2
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed 1,441 315,293 1.1
Baptist Missionary Association of America Evangelical Protestant Baptist 1,322 295,239 1.0
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist 1,365 285,699 1.0
American Baptist Association, The Evangelical Protestant Baptist 1,867 280,973 1.0
National Association of Free Will Baptists Evangelical Protestant Baptist 2,466 254,170 0.9
Christian Reformed Church in North America Evangelical Protestant Presbyterian-Reformed 740 248,938 0.9
General Association of Regular Baptist Churches Evangelical Protestant Baptist 1,422 245,636 0.9
International Pentecostal Holiness Church Evangelical Protestant Pentecostal 1,843 241,828 0.9
Converge Worldwide/Baptist General Conference Evangelical Protestant Baptist 866 238,920 0.8
Church of God (Anderson, Indiana) Evangelical Protestant Holiness 2,286 238,609 0.8
Conservative Baptist Association of America Evangelical Protestant Baptist 1,191 224,306 0.8
Unitarian Universalist Association of Congregations Other Liberal 999 182,698 0.6
Church of the Brethren Evangelical Protestant European Free-Church 1,074 171,281 0.6
Mennonite Church USA Evangelical Protestant European Free-Church 1,066 156,345 0.6
Vineyard USA Evangelical Protestant Pentecostal 529 155,170 0.6
Evangelical Covenant Church, The Evangelical Protestant Methodist/Pietist 671 153,116 0.5
Bahá'í Other Other Groups 1,198 146,756 0.5
New Testament Association of Independent Baptist Churches and other Fundamental Bapti Evangelical Protestant Baptist 649 132,684 0.5
Friends (Quakers) Mainline Protestant European Free-Church 1,302 113,086 0.4
Pentecostal Church of God Evangelical Protestant Pentecostal 1,173 101,921 0.4
Community of Christ Other Latter-day Saints 892 98,874 0.4
Old Order Amish Evangelical Protestant European Free-Church 1,290 96,986 0.3
Free Methodist Church of North America Evangelical Protestant Holiness 950 96,237 0.3
Armenian Church of North America (Catholicosate of Etchmiadzin) Orthodox Eastern Liturgical (Orthodox) 89 91,513 0.3
Church of God of Prophecy Evangelical Protestant Pentecostal 1,858 91,106 0.3
National Association of Congregational Christian Churches Mainline Protestant Presbyterian-Reformed 426 84,380 0.3
Antiochian Orthodox Christian Archdiocese of North America, The Orthodox Eastern Liturgical (Orthodox) 210 82,374 0.3
Evangelical Presbyterian Church Evangelical Protestant Presbyterian-Reformed 179 80,207 0.3
International Churches of Christ Evangelical Protestant Baptist 99 79,161 0.3
Cumberland Presbyterian Church Evangelical Protestant Presbyterian-Reformed 706 77,686 0.3
Orthodox Church in America Orthodox Eastern Liturgical (Orthodox) 370 77,110 0.3
National Primitive Baptist Convention, USA Evangelical Protestant Baptist 547 66,452 0.2
International Council of Community Churches Mainline Protestant Presbyterian-Reformed 192 64,186 0.2
North American Baptist Conference Evangelical Protestant Baptist 290 59,545 0.2
Serbian Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) 75 55,807 0.2
Conservative Congregational Christian Conference Evangelical Protestant Presbyterian-Reformed 250 50,940 0.2
"Old" Missionary Baptists Associations Evangelical Protestant Baptist 302 49,870 0.2
Missionary Church, The Evangelical Protestant Holiness 284 49,528 0.2
Armenian Apostolic Church of America (Catholicosate of Cilicia) Orthodox Eastern Liturgical (Orthodox) 38 46,354 0.2
Convention of Original Free Will Baptists Evangelical Protestant Baptist 237 46,211 0.2
Churches of God, General Conference Evangelical Protestant Presbyterian-Reformed 336 42,204 0.1
Associate Reformed Presbyterian Church Evangelical Protestant Presbyterian-Reformed 242 40,397 0.1
Ukrainian Orthodox Church of the USA Orthodox Eastern Liturgical (Orthodox) 104 35,586 0.1
Apostolic Catholic Assyrian Church of the East, North American Dioceses Orthodox Eastern Liturgical (Orthodox) 18 35,118 0.1
Mennonite; Other Groups Evangelical Protestant European Free-Church 412 34,617 0.1
Association of Free Lutheran Congregations Evangelical Protestant Lutheran 234 32,098 0.1
Greek Orthodox Archdiocese of Vasiloupulis Orthodox Eastern Liturgical (Orthodox) 38 30,148 0.1
U.S. Mennonite Brethren Evangelical Protestant European Free-Church 171 28,142 0.1
Orthodox Presbyterian Church, The Evangelical Protestant Presbyterian-Reformed 278 26,346 0.1
Moravian Church in America--Northern Province Mainline Protestant Methodist/Pietist 93 25,872 0.1
Brethren In Christ Church Evangelical Protestant European Free-Church 216 25,512 0.1
Independent Free Will Baptists Associations Evangelical Protestant Baptist 264 24,107 0.1
Apostolic Christian Church of America, Inc. Evangelical Protestant European Free-Church 84 23,980 0.1
Metropolitan Community Churches, Universal Fellowship of Mainline Protestant Other Groups 206 23,440 0.1
Old Order Mennonite Evangelical Protestant European Free-Church 132 21,116 0.1
American Carpatho-Russian Orthodox Diocese Orthodox Eastern Liturgical (Orthodox) 75 20,000 0.1
Moravian Church in America--Southern Province Mainline Protestant Methodist/Pietist 59 19,764 0.1
Congregational Christian Churches, Additional (not part of any national CCC body) Mainline Protestant Presbyterian-Reformed 104 17,821 0.1
Orthodox Church in America: Romanian Orthodox Episcopate of America Orthodox Eastern Liturgical (Orthodox) 56 17,201 0.1
Macedonian Orthodox Church: American Diocese Orthodox Eastern Liturgical (Orthodox) 17 16,640 0.1
Brethren Church, The (Ashland, Ohio) Evangelical Protestant European Free-Church 119 16,266 0.1
Interstate & Foreign Landmark Missionary Baptists Association Evangelical Protestant Baptist 121 16,127 0.1
Church of God in Christ, Mennonite Evangelical Protestant European Free-Church 100 15,337 0.1
Conservative Mennonite Conference Evangelical Protestant European Free-Church 104 14,865 0.1
Syriac Orthodox Church of Antioch Orthodox Eastern Liturgical (Orthodox) 23 13,845 0.0
Malankara Orthodox Syrian Church Orthodox Eastern Liturgical (Orthodox) 59 13,225 0.0
Duck River and Kindred Baptists Associations Evangelical Protestant Baptist 99 12,542 0.0
Hutterian Brethren Evangelical Protestant Communal 123 12,300 0.0
United Reformed Churches in North America Evangelical Protestant Presbyterian-Reformed 49 11,449 0.0
Separate Baptists in Christ Evangelical Protestant Baptist 94 10,674 0.0
Progressive Primitive Baptists Evangelical Protestant Baptist 121 9,615 0.0
Beachy Amish Mennonite Churches* Evangelical Protestant European Free-Church 102 9,422 0.0
Orthodox Church in America: Bulgarian Diocese Orthodox Eastern Liturgical (Orthodox) 18 8,791 0.0
Primitive Baptists, Eastern District Association of Evangelical Protestant Baptist 67 7,840 0.0
Romanian Orthodox Archdiocese in Americas Orthodox Eastern Liturgical (Orthodox) 14 7,543 0.0
Christian Union Evangelical Protestant Other Groups 114 7,319 0.0
Jasper Baptist and Pleasant Valley Baptist Associations Evangelical Protestant Baptist 31 7,078 0.0
Amish; Other Groups Evangelical Protestant European Free-Church 90 6,671 0.0
Fellowship of Evangelical Churches Evangelical Protestant European Free-Church 34 6,625 0.0
Protestant Reformed Churches in America Evangelical Protestant Presbyterian-Reformed 26 5,875 0.0
Orthodox Church in America: Albanian Orthodox Archdiocese Orthodox Eastern Liturgical (Orthodox) 12 5,775 0.0
Landmark Missionary Baptists, Independent Associations and Unaffiliated Churches Evangelical Protestant Baptist 59 5,682 0.0
International Pentecostal Church of Christ Evangelical Protestant Pentecostal 67 5,453 0.0
Bulgarian Eastern Orthodox Diocese of the USA, Canada and Australia Orthodox Eastern Liturgical (Orthodox) 9 5,340 0.0
Enterprise Baptists Association Evangelical Protestant Baptist 65 5,289 0.0
Church of God General Conference Evangelical Protestant Adventist 89 4,925 0.0
Primitive Methodist Church in the USA Evangelical Protestant Methodist/Pietist 79 4,796 0.0
Netherlands Reformed Congregations Evangelical Protestant Presbyterian-Reformed 15 4,442 0.0
Apostolic Christian Churches (Nazarene) Evangelical Protestant European Free-Church 50 4,393 0.0
Eastern Pennsylvania Mennonite Church Evangelical Protestant European Free-Church 49 4,384 0.0
Malankara Archdiocese of the Syrian Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) 24 4,336 0.0
Reformed Church in the United States Evangelical Protestant Presbyterian-Reformed 38 4,236 0.0
New Hope Baptist Association Evangelical Protestant Baptist 20 2,772 0.0
Wayne Trail Missionary Baptist Association Evangelical Protestant Baptist 13 2,756 0.0
Moravian Church in America--Alaska Province Mainline Protestant Methodist/Pietist 24 2,562 0.0
Holy Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) 30 1,889 0.0
Allegheny Wesleyan Methodist Connection Evangelical Protestant Methodist/Pietist 115 1,864 0.0
Fellowship of Evangelical Bible Churches Evangelical Protestant European Free-Church 17 1,811 0.0
Midwest Congregational Christian Fellowship Evangelical Protestant Presbyterian-Reformed 29 1,705 0.0
Fundamental Methodist Conference, Inc. Evangelical Protestant Methodist/Pietist 13 1,009 0.0
Bruderhof Communities, Inc. Evangelical Protestant European Free-Church 7 924 0.0
Old Order River Brethren Evangelical Protestant European Free-Church 5 540 0.0
Albanian Orthodox Diocese of America Orthodox Eastern Liturgical (Orthodox) 2 395 0.0
Reformed Mennonite Church Evangelical Protestant European Free-Church 9 347 0.0
Two-Seed-in-the-Spirit Predestinarian Baptists Evangelical Protestant Baptist 4 65 0.0
Strict Baptists Evangelical Protestant Baptist 3 33 0.0
General Six Principle Baptists Evangelical Protestant Baptist 1 25 0.0
(Original) Church of God Evangelical Protestant Pentecostal --- --- ---
African Methodist Episcopal Church Black Protestant Methodist/Pietist --- --- ---
African Methodist Episcopal Zion Church Black Protestant Methodist/Pietist --- --- ---
Alliance of Baptists Mainline Protestant Baptist --- --- ---
Amana Church Society Evangelical Protestant Communal --- --- ---
Ambassadors Amish Mennonite* Evangelical Protestant European Free-Church --- --- ---
American Association of Lutheran Churches Evangelical Protestant Lutheran --- --- ---
American Presbyterian Church Evangelical Protestant Presbyterian-Reformed --- --- ---
Amish Groups, undifferentiated* Evangelical Protestant European Free-Church --- --- ---
Anglican Church in North America Evangelical Protestant Episcopalianism/Anglicanism --- --- ---
Apostolic Faith Mission of Portland, OR Evangelical Protestant Pentecostal --- --- ---
Apostolic Lutheran Church of America Evangelical Protestant Lutheran --- --- ---
Armenian Evangelical Churches (Additional) Evangelical Protestant Presbyterian-Reformed --- --- ---
Assemblies of God International Fellowship Evangelical Protestant Pentecostal --- --- ---
Association of Messianic Congregations Other Judaism --- --- ---
Association of Reformed Baptist Churches of America Evangelical Protestant Baptist --- --- ---
Berea Amish Mennonite* Evangelical Protestant European Free-Church --- --- ---
Bible Fellowship Church Evangelical Protestant Holiness --- --- ---
Bible Presbyterian Church (General Synod) Evangelical Protestant Presbyterian-Reformed --- --- ---
Buddhists Other Other Groups 1,656 --- ---
Calvary Chapel Fellowship Churches Evangelical Protestant Pentecostal 728 --- ---
Canadian and American Reformed Churches Evangelical Protestant Presbyterian-Reformed --- --- ---
Central Yearly Meeting of Friends* Evangelical Protestant European Free-Church --- --- ---
Christian Brethren Evangelical Protestant Ind. Fundamentalist --- --- ---
Christian Methodist Episcopal Church Black Protestant Methodist/Pietist --- --- ---
Church of Christ (Holiness), U.S.A. Evangelical Protestant Holiness --- --- ---
Church of Christ, Scientist Other Christian Science --- --- ---
Church of God (Seventh Day) Evangelical Protestant Adventist --- --- ---
Church of God by Faith, Inc. Evangelical Protestant Pentecostal --- --- ---
Church of God in Christ Black Protestant Pentecostal --- --- ---
Church of God of the Apostolic Faith, Inc. Evangelical Protestant Pentecostal --- --- ---
Church of God, Mountain Assembly, Inc. Evangelical Protestant Pentecostal --- --- ---
Church of Our Lord Jesus Christ of the Apostolic Faith, Inc. Black Protestant Pentecostal --- --- ---
Church of the Lutheran Brethren of America Evangelical Protestant Lutheran --- --- ---
Church of the Lutheran Confession Evangelical Protestant Lutheran --- --- ---
Church of the United Brethren in Christ Evangelical Protestant Methodist/Pietist --- --- ---
Churches of Christ in Christian Union Evangelical Protestant Holiness --- --- ---
Communion of Reformed Evangelical Churches Evangelical Protestant Presbyterian-Reformed --- --- ---
Congregational Holiness Church Evangelical Protestant Pentecostal --- --- ---
Congregational Methodist Church Evangelical Protestant Methodist/Pietist --- --- ---
Conservative Judaism Other Judaism --- --- ---
Conservative Lutheran Association Evangelical Protestant Lutheran --- --- ---
Conservative Yearly Meetings of Friends* Evangelical Protestant European Free-Church --- --- ---
Coptic Orthodox Church Orthodox Eastern Liturgical (Orthodox) 55 --- ---
Covenant Reformed Presbyterian Church Evangelical Protestant Presbyterian-Reformed --- --- ---
Cumberland Presbyterian Church in America Black Protestant Presbyterian-Reformed --- --- ---
Elim Fellowship Evangelical Protestant Pentecostal --- --- ---
Eritrean Orthodox Orthodox Eastern Liturgical (Orthodox) --- --- ---
Ethiopian Orthodox Orthodox Eastern Liturgical (Orthodox) --- --- ---
Evangelical Association of Reformed, and Congregational Christian Churches Evangelical Protestant Presbyterian-Reformed --- --- ---
Evangelical Church, The Evangelical Protestant Holiness --- --- ---
Evangelical Congregational Church, The Evangelical Protestant Methodist/Pietist --- --- ---
Evangelical Friends Church International* Evangelical Protestant European Free-Church --- --- ---
Evangelical Lutheran Synod Evangelical Protestant Lutheran --- --- ---
Evangelical Methodist Church Evangelical Protestant Methodist/Pietist --- --- ---
Federation of Reformed Churches Evangelical Protestant Presbyterian-Reformed --- --- ---
Free Church of Scotland (Continuing) Evangelical Protestant Presbyterian-Reformed --- --- ---
Free Presbyterian Church of North America Evangelical Protestant Presbyterian-Reformed --- --- ---
Free Reformed Church of North America Evangelical Protestant Presbyterian-Reformed --- --- ---
Friends General Conference and Friends United Meeting, dually aligned meetings* Mainline Protestant European Free-Church --- --- ---
Friends General Conference* Mainline Protestant European Free-Church --- --- ---
Friends United Meeting* Mainline Protestant European Free-Church --- --- ---
Full Gospel Baptist Church Fellowship Black Protestant Baptist --- --- ---
Fundamental Baptist Fellowship Evangelical Protestant Baptist --- --- ---
Georgian Orthodox Parishes in the United States Orthodox Eastern Liturgical (Orthodox) --- --- ---
Grace Brethren Churches, Fellowship of Mainline Protestant European Free-Church --- --- ---
Grace Gospel Fellowship Evangelical Protestant Ind. Fundamentalist --- --- ---
Heritage Reformed Churches Evangelical Protestant Presbyterian-Reformed --- --- ---
Hindus Other Other Groups 629 --- ---
Hungarian Reformed Churches (Additional) Mainline Protestant Presbyterian-Reformed --- --- ---
Independent Baptist Fellowship International Evangelical Protestant Baptist --- --- ---
Independent Fundamental Churches of America Evangelical Protestant Ind. Fundamentalist --- --- ---
Independent Yearly Meetings of Friends* Mainline Protestant European Free-Church --- --- ---
International Fellowship of Bible Churches Evangelical Protestant
----
--- --- ---
International Fellowship of Christian Assemblies Evangelical Protestant
----
--- --- ---
Jain Other Other Groups 92 --- ---
Jehovah's Witnesses Other Adventist --- --- ---
Korean Presbyterian Church Abroad Evangelical Protestant Presbyterian-Reformed --- --- ---
Korean Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed --- --- ---
Korean-American Presbyterian Church Evangelical Protestant Presbyterian-Reformed --- --- ---
Lutheran Congregations in Mission for Christ Evangelical Protestant Lutheran --- --- ---
Maranatha Amish Mennonite* Evangelical Protestant European Free-Church --- --- ---
Mennonite Christian Fellowship* Evangelical Protestant European Free-Church --- --- ---
Midwest Beachy Amish Mennonite* Evangelical Protestant European Free-Church --- --- ---
National Baptist Convention of America, Inc. Black Protestant Baptist --- --- ---
National Baptist Convention, USA, Inc. Black Protestant Baptist --- --- ---
National Missionary Baptist Convention, Inc. Black Protestant Baptist --- --- ---
National Spiritualist Association of Churches Other Spiritualist --- --- ---
New Apostolic Church of North America, National Organization of the Other Other Groups --- --- ---
New Testament Association of Independent Baptist Churches Evangelical Protestant Baptist --- --- ---
Non-denominational Evangelical Protestant
----
--- --- ---
North American Lutheran Church Evangelical Protestant Lutheran --- --- ---
Open Bible Standard Churches, Inc. Evangelical Protestant Pentecostal --- --- ---
Orthodox Judaism Other Judaism --- --- ---
Patriarchal Parishes of the Russian Orthodox Church in the USA Orthodox Eastern Liturgical (Orthodox) 32 --- ---
Pentecostal Fire-Baptized Holiness Church Evangelical Protestant Pentecostal --- --- ---
Pentecostal Free Will Baptist Church, Inc. Evangelical Protestant Pentecostal --- --- ---
Pillar of Fire Evangelical Protestant Holiness --- --- ---
Polish National Catholic Church Catholic Catholicism --- --- ---
Presbyterian Reformed Church Evangelical Protestant Presbyterian-Reformed --- --- ---
Primitive Baptist Church, The Evangelical Protestant Baptist 1,381 --- ---
Progressive National Baptist Convention, Inc. Black Protestant Baptist --- --- ---
Reconstructionist Judaism Other Judaism --- --- ---
Reform Judaism Other Judaism --- --- ---
Reformed Baptist Churches Evangelical Protestant Baptist 197 --- ---
Reformed Presbyterian Church General Assembly Evangelical Protestant Presbyterian-Reformed --- --- ---
Reformed Presbyterian Church Hanover Presbytery Evangelical Protestant Presbyterian-Reformed --- --- ---
Reformed Presbyterian Church in the United States Evangelical Protestant Presbyterian-Reformed --- --- ---
Reformed Presbyterian Church of North America Evangelical Protestant Presbyterian-Reformed --- --- ---
Russian Orthodox Church Outside of Russia Orthodox Eastern Liturgical (Orthodox) 129 --- ---
Schwenkfelder Church Evangelical Protestant European Free-Church --- --- ---
Serbian Orthodox Church in the USA (New Gracanica Metropolitanate) Orthodox Eastern Liturgical (Orthodox) 38 --- ---
Seventh Day Baptist General Conference, USA and Canada Evangelical Protestant Baptist --- --- ---
Shinto Other Other Groups --- --- ---
Sikh Other Other Groups 211 --- ---
Southern Methodist Church Evangelical Protestant Methodist/Pietist --- --- ---
Southwide Baptist Fellowship Evangelical Protestant Baptist 501 --- ---
Swedenborgian Church Other Spiritualist --- --- ---
Tampico Amish Mennonite* Evangelical Protestant European Free-Church --- --- ---
Tao Other Other Groups 38 --- ---
Unaffiliated Conservative Amish Mennonite Church* Evangelical Protestant European Free-Church --- --- ---
Unaffiliated Friends Meetings* Mainline Protestant European Free-Church --- --- ---
Union of Messianic Jewish Congregations Other Judaism --- --- ---
United Catholic Church, Inc. Catholic Catholicism --- --- ---
United Holy Church of America, Inc. Black Protestant Pentecostal --- --- ---
United Pentecostal Church International Evangelical Protestant Pentecostal --- --- ---
United Pentecostal Council of the Assemblies of God Evangelical Protestant Pentecostal --- --- ---
United Zion Church Evangelical Protestant European Free-Church --- --- ---
Unity Churches, Association of Other Other Groups --- --- ---
Unity of the Brethren Evangelical Protestant Methodist/Pietist --- --- ---
Vicariate for the Palestinian/Jordanian Orthodox Christian Communities Orthodox Eastern Liturgical (Orthodox) --- --- ---
Zoroastrian Other Other Groups 35 --- ---
Totals: 268,254 141,371,963  

The population of the United States was 281,421,839 in 2000; in 1990 it was 248,709,766. The total population changed 13.2%. The adherent totals of the religious groups listed above (141,371,963) included 50.2% 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 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.