Denomination Largest in X States Largest in X Metros Largest in X Counties One of 5 Largest in X States Largest State Largest Metro States with Presence Counties with Presence Metros with Presence
  From data in newly published book Most adherents or congregations Adherents or congregations
Albanian Orthodox Diocese of America - - - - Illinois Chicago 2 2 2
Allegheny Wesleyan Methodist Connection - - - - Pennsylvania Pittsburgh 18 61 21
American Baptist Association, The - - - 1 Arkansas Little Rock, AR 46 594 159
American Baptist Churches in the USA - 1 35 9 New York New York 51 1,111 199
American Carpatho-Russian Orthodox Greek Catholic Church - - - - Pennsylvania New York 13 52 22
Amish; Other Groups - - - - Ohio Philadelphia 20 56 14
Antiochian Orthodox Christian Archdiocese of North America, The - - - - California Boston 44 160 103
Apostolic Catholic Assyrian Church of the East, North American Dioceses - - - - Illinois Chicago 7 14 10
Apostolic Christian Church of America, Inc. - - 1 - Illinois Peoria, IL 22 73 36
Apostolic Christian Churches (Nazarean) - - - - Ohio Cleveland 19 38 28
Armenian Apostolic Church / Catholicossate of Cilicia - - - - California Los Angeles 20 33 26
Armenian Apostolic Church / Catholicossate of Etchmiadzin - - - - California New York 27 70 54
Assemblies of God - - 4 16 California Los Angeles 51 2,616 276
Associate Reformed Presbyterian Church - - - - South Carolina Charlotte 21 115 43
Association of Free Lutheran Congregations, The - - - - Minnesota Minneapolis 24 146 35
Bahá'í - - - - California Los Angeles 49 2,407 274
Baptist General Conference - - - - California Minneapolis 36 346 92
Baptist Missionary Association of America - - 4 2 Texas Dallas 27 358 77
Beachy Amish Mennonite Churches - - - - Pennsylvania Lancaster, PA 22 78 20
Brethren Church, The (Ashland, Ohio) - - - - Ohio Cleveland 20 73 28
Brethren In Christ Church - - - - Pennsylvania Harrisburg, PA 21 88 37
Bruderhof Communities, Inc. - - - - New York N.Y./Pittsburgh 2 4 2
Buddhism - - - - California Los Angeles 48 359 149
Bulgarian Orthodox Diocese of the USA - - - - Michigan Detroit 7 9 8
Calvary Chapel Fellowship Churches - - - - California Los Angeles 48 380 165
Catholic Church 38 173 1,260 51 California New York 51 2,987 276
Christian and Missionary Alliance, The - - 1 - Pennsylvania New York 51 709 201
Christian Church (Disciples of Christ) - - 4 2 Texas Kansas City 47 1,290 237
Christian Churches and Churches of Christ - - 42 2 Indiana Indianapolis 50 1,600 245
Christian Reformed Church in North America - - 2 1 Michigan Grand Rapids 39 236 89
Christian Union - - - - Ohio Kansas City 7 59 16
Church of God (Anderson, Indiana) - - 1 - Ohio Indianapolis 49 990 213
Church of God (Cleveland, Tennessee) - - 1 2 Georgia Atlanta 51 1,595 257
Church of God General Conference - - - - Illinois Greenville, SC 21 69 30
Church of God in Christ, Mennonite - - 1 - Kansas Wichita, KS 31 82 13
Church of God of Prophecy - - - - Tennessee New York 51 932 205
Church of Jesus Christ of Latter-day Saints, The 2 6 - 13 Utah Salt Lake City 51 1,802 275
Church of the Brethren - - 1 - Pennsylvania Washington 39 432 106
Church of the Nazarene - - - - California Los Angeles 51 1,858 272
Churches of Christ - - 5 5 Texas Dallas 51 2,429 275
Churches of God, General Conference - - - - Pennsylvania Harrisburg, PA 19 125 33
Community of Christ - - 1 - Missouri Kansas City 49 615 191
Congregational Christian Churches, Additional (not part of any national CCC body) - - - - Massachusetts Boston 22 79 22
Conservative Baptist Association of America - - 1 - California Los Angeles 40 418 107
Conservative Congregational Christian Conference - - - - California Boston 30 169 52
Conservative Mennonite Conference - - - - Ohio Elkhart, IN 22 59 22
Coptic Orthodox Church - - - - California Los Angeles 11 39 33
Cumberland Presbyterian Church - - - - Tennessee Nashville 20 269 51
Duck River and Kindred Baptists Associations - - - - Tennessee Nashville 4 25 4
Eastern Pennsylvania Mennonite Church - - - - Pennsylvania Lancaster, PA 13 34 9
Enterprise Baptists Association - - 2 - Kentucky Columbus, OH 3 26 6
Episcopal Church - - 4 13 New York New York 51 2,118 275
Evangelical Covenant Church, The - - - - California Chicago 41 312 98
Evangelical Free Church of America, The - - - - California Los Angeles 48 720 183
Evangelical Lutheran Church in America - 4 157 16 Minnesota Minneapolis 51 1,756 267
Evangelical Mennonite Church - - - - Illinois Peoria, IL 6 23 12
Evangelical Presbyterian Church - - - - Michigan Detroit 28 121 59
Fellowship of Evangelical Bible Churches - - - - Nebraska Omaha 8 15 3
Free Methodist Church of North America - - 1 - Michigan Los Angeles 45 480 144
Friends (Quakers) - - 1 - North Carolina Philadelphia 49 573 182
Fundamental Methodist Conference, Inc. - - - - Missouri Springfield, MO 1 7 2
General Association of Regular Baptist Churches - - - - Michigan Grand Rapids 45 642 149
General Six Principle Baptists - - - - Pennsylvania -none- 1 1
Greek Orthodox Archdiocese of America - - - - New York New York 50 336 184
Greek Orthodox Archdiocese of Vasiloupulis - - - - New York New York 14 30 20
Hindu - - - - California New York 42 206 93
Holy Orthodox Church in North America - - - - Massachusetts Boston 18 26 19
Hutterian Brethren - - - - South Dakota Great Falls, MT 5 60 4
Independent Free Will Baptists Associations - - 1 - Tennessee Johnson City, TN 10 53 6
Independent, Charismatic Churches - - - - California Los Angeles 47 305 156
Independent, Non-Charismatic Churches - - - - Texas Dallas 46 458 181
International Church of the Foursquare Gospel - - - 1 California Los Angeles 50 726 209
International Churches of Christ - - - - California Los Angeles 45 99 92
International Council of Community Churches - - - - Illinois Chicago 32 118 61
International Pentecostal Church of Christ - - - - Ohio Dayton, OH 14 49 18
International Pentecostal Holiness Church - - - - North Carolina Oklahoma City 43 627 151
Interstate & Foreign Landmark Missionary Baptists Association - - - - Mississippi Hattiesburg, MS 6 30 9
Jain - - - - New York New York 25 71 50
Jasper Baptist and Pleasant Valley Baptist Associations - - 1 - Georgia Atlanta 1 5 1
Jewish Estimate - - 81 14 New York New York 51 672 262
Landmark Missionary Baptists, Independent Associations and Unaffiliated Churches - - - - Mississippi Los Angeles 5 31 9
Lutheran Church--Missouri Synod - - 24 11 Illinois Chicago 51 1,801 264
Macedonian Orthodox Church: American Diocese - - - - Michigan Chicago 9 17 13
Malankara Archdiocese of the Syrian Orthodox Church in North America - - - - New York New York 11 18 13
Malankara Orthodox Syrian Church, American Diocese of the - - - - New York New York 15 35 21
Mennonite Brethren Churches, U.S. Conference of - - - - California Fresno, CA 19 82 34
Mennonite Church USA - - 3 - Pennsylvania Lancaster, PA 46 400 121
Mennonite; Other Groups - - - - Pennsylvania Lancaster, PA 42 237 52
Midwest Congregational Christian Fellowship - - - - Indiana Muncie, IN 2 8 2
Missionary Church, The - - - - Indiana Los Angeles 26 136 48
Moravian Church in America--Alaska Province - - - - Alaska Anchorage, AK 1 3 1
Moravian Church in America--Northern Province - - - - Pennsylvania Allentown, PA-NJ 14 44 19
Moravian Church in America--Southern Province - - - - North Carolina Greensboro 4 19 10
Muslim Estimate - - 1 - California New York 51 424 204
National Association of Congregational Christian Churches - - - - Michigan Detroit 38 232 76
National Association of Free Will Baptists - - 5 - Oklahoma Johnson City, TN 41 710 156
National Primitive Baptist Convention, USA - - - - Florida Huntsville, AL 19 147 51
Netherlands Reformed Congregations - - - - Iowa Grand Rapids 8 13 9
New Hope Baptist Association - - - - Georgia Atlanta 1 6 1
New Testament Association of Independent Baptist Churches and other Fundamental Baptist Associations/Fellowships - - 1 - Indiana Indianapolis 18 314 67
North American Baptist Conference - - - - California Sacramento 27 167 50
"Old" Missionary Baptists Associations - - 3 - Georgia Atlanta 11 85 15
Old Order Amish Church - - 2 - Pennsylvania Lancaster, PA 24 238 40
Old Order Mennonite - - - - Pennsylvania Lancaster, PA 15 51 11
Old Order River Brethren - - - - Pennsylvania Lancaster, PA 2 3 2
Original Free Will Baptists - - 1 - North Carolina Raleigh 2 38 10
Orthodox Church in America: Albanian Orthodox Archdiocese - - - - Massachusetts Boston 6 9 6
Orthodox Church in America: Bulgarian Diocese - - - - California Los Angeles 6 15 10
Orthodox Church in America: Romanian Orthodox Episcopate of America - - - - Illinois Chicago 20 45 32
Orthodox Church in America: Territorial Dioceses - - 5 1 Alaska Anchorage, AK 42 226 100
Orthodox Presbyterian Church, The - - - - Pennsylvania Philadelphia 45 217 96
Patriarchal Parishes of the Russian Orthodox Church in the USA - - - - Pennsylvania New York 12 29 18
Pentecostal Church of God - - - - California San Francisco 45 574 128
Presbyterian Church (U.S.A.) - - 3 - Pennsylvania New York 51 2,377 272
Presbyterian Church in America - - - 13 Florida Washington 49 631 192
Primitive Baptist Churches--Old Line - - - - Georgia Atlanta 31 713 141
Primitive Baptists, Eastern District Association of - - - - Tennessee Johnson City, TN 4 15 2
Primitive Methodist Church in the USA - - - - Pennsylvania Scranton, PA 10 35 15
Progressive Primitive Baptists - - - - Georgia Savannah, GA 10 71 22
Protestant Reformed Churches in America - - - - Michigan Grand Rapids 10 15 7
Reformed Baptist Churches - - - - California New York 47 167 76
Reformed Church in America - - 4 - Michigan New York 31 237 73
Reformed Church in the United States - - - - South Dakota Minneapolis 13 35 16
Reformed Mennonite Church - - - - Pennsylvania Lancaster, PA 5 9 5
Romanian Orthodox Archdiocese in America and Canada - - - - Massachusetts Boston 10 12 10
Russian Orthodox Church Outside of Russia - - - - California New York 34 101 55
Salvation Army, The - - 1 - California New York 51 818 271
Separate Baptists in Christ - - - - Kentucky Kokomo, IN 9 35 7
Serbian Orthodox Church in the USA - - - - Illinois Chicago 27 61 42
Serbian Orthodox Church in the USA (New Gracanica Metropolitanate) - - - - California/Ohio/Illinois Chicago 17 32 21
Seventh-day Adventist Church - - 1 - California Los Angeles 51 1,747 273
Sikh - - - - California Los Angeles 38 118 70
Southern Baptist Convention 10 89 1,222 31 Texas Dallas 51 2,670 276
Southwide Baptist Fellowship - - - - North Carolina Washington 34 327 104
Strict Baptists - - - - Michigan Grand Rapids 3 3 2
Syrian Orthodox Church of Antioch - - - - California Los Angeles 12 19 15
Tao - - - - California San Francisco 15 24 16
Two-Seed-in-the-Spirit Predestinarian Baptists - - - - Texas Huntsville, AL 4 4 1
Ukrainian Orthodox Church of the USA - - - - Pennsylvania New York 23 77 38
Unitarian Universalist Association of Congregations - - - - Massachusetts Boston 51 593 239
United Church of Christ - - 6 8 Pennsylvania Boston 50 1,229 218
United Methodist Church, The 1 3 245 42 Texas Washington 51 3,003 275
United Reformed Churches in North America - - - - Michigan Grand Rapids 18 34 17
Universal Fellowship of Metropolitan Community Churches - - - - Texas Dallas 47 179 129
Vineyard USA - - - - California Los Angeles 47 339 153
Wayne Trail Missionary Baptist Association - - - - Ohio Lima, OH 2 9 4
Wesleyan Church, The - - 2 - Michigan Grand Rapids 49 766 175
Wisconsin Evangelical Lutheran Synod - - - 1 Wisconsin Milwaukee 48 535 167
Zoroastrian - - - - California Los Angeles 15 26 20