| Religious Group | County with Greatest Population Penetration | State with Greatest Population Penetration | Metro with Greatest Population Penetration |
| Albanian Orthodox Diocese of America | Suffolk County, MA (0.2 adherents per 1,000 people) | Illinois (0.022 adherents per 1,000 people) | Chicago-Gary-Kenosha, IL-IN-WI (CMSA) (0.03 adherents per 1,000 people) |
| Allegheny Wesleyan Methodist Connection | Mineral County, MT (11.8 adherents per 1,000 people) | West Virginia (0.09 adherents per 1,000 people) | Sharon, PA (1.01 adherents per 1,000 people) |
| American Baptist Association, The | Grant County, AR (477.9 adherents per 1,000 people) | Arkansas (43.359 adherents per 1,000 people) | Pine Bluff, AR (74.88 adherents per 1,000 people) |
| American Baptist Churches in the USA | Arthur County, NE (723 adherents per 1,000 people) | District Of Columbia (90.613 adherents per 1,000 people) | Parkersburg-Marietta, WV-OH (94.47 adherents per 1,000 people) |
| American Carpatho-Russian Orthodox Greek Catholic Church | Huntingdon County, PA (13.7 adherents per 1,000 people) | Pennsylvania (0.704 adherents per 1,000 people) | Binghamton, NY (7.4 adherents per 1,000 people) |
| Amish; Other Groups | Holmes County, OH (31.3 adherents per 1,000 people) | Ohio (0.218 adherents per 1,000 people) | Wausau, WI (1.19 adherents per 1,000 people) |
| Antiochian Orthodox Christian Archdiocese of North America, The | Adams County, ID (35.7 adherents per 1,000 people) | Massachusetts (1.414 adherents per 1,000 people) | Charleston, WV (6.63 adherents per 1,000 people) |
| Apostolic Catholic Assyrian Church of the East, North American Dioceses | Stanislaus County, CA (7.4 adherents per 1,000 people) | Illinois (1.835 adherents per 1,000 people) | Modesto, CA (7.36 adherents per 1,000 people) |
| Apostolic Christian Church of America, Inc. | Stark County, IL (145.8 adherents per 1,000 people) | Illinois (0.79 adherents per 1,000 people) | Peoria-Pekin, IL (15.26 adherents per 1,000 people) |
| Apostolic Christian Churches (Nazarean) | Richland County, OH (5.4 adherents per 1,000 people) | Ohio (0.152 adherents per 1,000 people) | Mansfield, OH (3.98 adherents per 1,000 people) |
| Armenian Apostolic Church / Catholicossate of Cilicia | Dent County, MO (5.4 adherents per 1,000 people) | Rhode Island (1.335 adherents per 1,000 people) | Los Angeles-Riverside-Orange County, CA (CMSA) (1.53 adherents per 1,000 people) |
| Armenian Apostolic Church / Catholicossate of Etchmiadzin | Bergen County, NJ (7.9 adherents per 1,000 people) | Massachusetts (2.339 adherents per 1,000 people) | Bryan-College Station, TX (3.67 adherents per 1,000 people) |
| Assemblies of God | Thomas County, NE (178.3 adherents per 1,000 people) | Oklahoma (25.59 adherents per 1,000 people) | Springfield, IL (75.01 adherents per 1,000 people) |
| Associate Reformed Presbyterian Church | Lexington city, VA (97 adherents per 1,000 people) | South Carolina (3.654 adherents per 1,000 people) | Columbia, SC (8.1 adherents per 1,000 people) |
| Association of Free Lutheran Congregations, The | Roseau County, MN (82.9 adherents per 1,000 people) | North Dakota (7.258 adherents per 1,000 people) | Grand Forks, ND-MN (15.09 adherents per 1,000 people) |
| Bahá'í | Marion County, SC (51.7 adherents per 1,000 people) | South Carolina (4.383 adherents per 1,000 people) | Florence, SC (18.59 adherents per 1,000 people) |
| Baptist General Conference | Isanti County, MN (68 adherents per 1,000 people) | Minnesota (9.468 adherents per 1,000 people) | Minneapolis-St. Paul, MN-WI (12.14 adherents per 1,000 people) |
| Baptist Missionary Association of America | Nevada County, AR (308.8 adherents per 1,000 people) | Arkansas (32.634 adherents per 1,000 people) | Jonesboro, AR (90.65 adherents per 1,000 people) |
| Beachy Amish Mennonite Churches | Macon County, GA (24.2 adherents per 1,000 people) | Indiana (0.21 adherents per 1,000 people) | Elkhart-Goshen, IN (2.59 adherents per 1,000 people) |
| Brethren Church, The (Ashland, Ohio) | Carroll County, IL (26.4 adherents per 1,000 people) | Indiana (0.762 adherents per 1,000 people) | Elkhart-Goshen, IN (9.69 adherents per 1,000 people) |
| Brethren In Christ Church | Franklin County, PA (22.3 adherents per 1,000 people) | Pennsylvania (1.353 adherents per 1,000 people) | Lancaster, PA (9.42 adherents per 1,000 people) |
| Bruderhof Communities, Inc. | Greene County, NY (2.7 adherents per 1,000 people) | New York (0.035 adherents per 1,000 people) | Pittsburgh, PA (0.11 adherents per 1,000 people) |
| Buddhism | Saguache County, CO (5.1 congregations per 10,000 people) | Hawaii (0.603 congregations per 10,000 people) | Honolulu, HI (0.68 congregations per 10,000 people) |
| Bulgarian Orthodox Diocese of the USA | Bureau County, IL (10.1 adherents per 1,000 people) | District Of Columbia (0.769 adherents per 1,000 people) | Harrisburg-Lebanon-Carlisle, PA (0.35 adherents per 1,000 people) |
| Calvary Chapel Fellowship Churches | Elk County, KS (3.1 congregations per 10,000 people) | Hawaii (0.132 congregations per 10,000 people) | San Luis Obispo-Atascadero-Paso Robles, CA (0.28 congregations per 10,000 people) |
| Catholic Church, The | Dimmit County, TX (946.8 adherents per 1,000 people) | Rhode Island (517.251 adherents per 1,000 people) | Laredo, TX (681.25 adherents per 1,000 people) |
| Christian and Missionary Alliance, The | Hayes County, NE (235 adherents per 1,000 people) | Nebraska (5.896 adherents per 1,000 people) | Chico-Paradise, CA (21.1 adherents per 1,000 people) |
| Christian Church (Disciples of Christ) | Lane County, KS (255.2 adherents per 1,000 people) | Kansas (21.168 adherents per 1,000 people) | Enid, OK (50.51 adherents per 1,000 people) |
| Christian Churches and Churches of Christ | Craig County, VA (276.6 adherents per 1,000 people) | Indiana (33.782 adherents per 1,000 people) | Joplin, MO (72.29 adherents per 1,000 people) |
| Christian Reformed Church in North America | Sioux County, IA (289.3 adherents per 1,000 people) | Michigan (11.341 adherents per 1,000 people) | Grand Rapids-Muskegon-Holland, MI (84.92 adherents per 1,000 people) |
| Christian Union | Ray County, MO (45.7 adherents per 1,000 people) | Missouri (0.369 adherents per 1,000 people) | Enid, OK (3.56 adherents per 1,000 people) |
| Church of God (Anderson, Indiana) | Bath County, KY (54.8 adherents per 1,000 people) | Indiana (3.583 adherents per 1,000 people) | Casper, WY (20.07 adherents per 1,000 people) |
| Church of God (Cleveland, Tennessee) | Clinch County, GA (121.7 adherents per 1,000 people) | Georgia (16.872 adherents per 1,000 people) | Anniston, AL (34.52 adherents per 1,000 people) |
| Church of God General Conference | Meeker County, MN (7.2 adherents per 1,000 people) | South Carolina (0.159 adherents per 1,000 people) | Rockford, IL (1.45 adherents per 1,000 people) |
| Church of God in Christ, Mennonite | Gray County, KS (192.8 adherents per 1,000 people) | Kansas (1.706 adherents per 1,000 people) | Merced, CA (3.62 adherents per 1,000 people) |
| Church of God of Prophecy | Covington city, VA (31.1 adherents per 1,000 people) | Tennessee (1.446 adherents per 1,000 people) | Florence, SC (2.86 adherents per 1,000 people) |
| Church of Jesus Christ of Latter-day Saints, The | Franklin County, ID (915.7 adherents per 1,000 people) | Utah (664.463 adherents per 1,000 people) | Provo-Orem, UT (881.3 adherents per 1,000 people) |
| Church of the Brethren | Floyd County, VA (131.8 adherents per 1,000 people) | West Virginia (4.536 adherents per 1,000 people) | Altoona, PA (34.36 adherents per 1,000 people) |
| Church of the Nazarene | Johnson County, GA (81.9 adherents per 1,000 people) | Kansas (11.866 adherents per 1,000 people) | Charleston, WV (29.42 adherents per 1,000 people) |
| Churches of Christ | Clay County, TN (265.3 adherents per 1,000 people) | Tennessee (38.08 adherents per 1,000 people) | Florence, AL (130.14 adherents per 1,000 people) |
| Churches of God, General Conference | Woodson County, KS (47 adherents per 1,000 people) | Pennsylvania (1.848 adherents per 1,000 people) | Harrisburg-Lebanon-Carlisle, PA (14.19 adherents per 1,000 people) |
| Community of Christ | Decatur County, IA (112.7 adherents per 1,000 people) | Missouri (3.584 adherents per 1,000 people) | Kansas City, MO-KS (8.48 adherents per 1,000 people) |
| Congregational Christian Churches, Additional (not part of any national CCC body) | Mason County, MI (26.1 adherents per 1,000 people) | Maine (1.034 adherents per 1,000 people) | Portland, ME (NECMA) (2.34 adherents per 1,000 people) |
| Conservative Baptist Association of America | Powder River County, MT (53.8 adherents per 1,000 people) | Oregon (10.527 adherents per 1,000 people) | Richland-Kennewick-Pasco, WA (11.65 adherents per 1,000 people) |
| Conservative Congregational Christian Conference | Hettinger County, ND (53.8 adherents per 1,000 people) | North Dakota (1.375 adherents per 1,000 people) | Jamestown,NY (7.68 adherents per 1,000 people) |
| Conservative Mennonite Conference | Lewis County, NY (53.8 adherents per 1,000 people) | Delaware (1.127 adherents per 1,000 people) | Elkhart-Goshen, IN (6.94 adherents per 1,000 people) |
| Coptic Orthodox Church | Blount County, TN (0.2 congregations per 10,000 people) | Hawaii (0.008 congregations per 10,000 people) | Bryan-College Station, TX (0.07 congregations per 10,000 people) |
| Cumberland Presbyterian Church | Crittenden County, KY (49.2 adherents per 1,000 people) | Tennessee (6.049 adherents per 1,000 people) | Florence, AL (8.28 adherents per 1,000 people) |
| Duck River and Kindred Baptists Associations | Moore County, TN (115.5 adherents per 1,000 people) | Tennessee (1.497 adherents per 1,000 people) | Gadsden, AL (1.28 adherents per 1,000 people) |
| Eastern Pennsylvania Mennonite Church | Montour County, PA (7.4 adherents per 1,000 people) | Pennsylvania (0.258 adherents per 1,000 people) | Lancaster, PA (2.61 adherents per 1,000 people) |
| Enterprise Baptists Association | Elliott County, KY (88.5 adherents per 1,000 people) | Kentucky (0.802 adherents per 1,000 people) | Huntington-Ashland, WV-KY-OH (1.31 adherents per 1,000 people) |
| Episcopal Church | Yukon-Koyukuk Census Area, AK (255.2 adherents per 1,000 people) | District Of Columbia (34.434 adherents per 1,000 people) | Charlottesville, VA (32.66 adherents per 1,000 people) |
| Evangelical Covenant Church, The | Nome Census Area, AK (47.5 adherents per 1,000 people) | Minnesota (4.577 adherents per 1,000 people) | Duluth-Superior, MN-WI (9.13 adherents per 1,000 people) |
| Evangelical Free Church of America, The | Phelps County, NE (89.1 adherents per 1,000 people) | Nebraska (7.17 adherents per 1,000 people) | La Crosse, WI-MN (13.56 adherents per 1,000 people) |
| Evangelical Lutheran Church in America | Steele County, ND (778.6 adherents per 1,000 people) | North Dakota (271.806 adherents per 1,000 people) | Fargo-Moorhead, ND-MN (297.18 adherents per 1,000 people) |
| Evangelical Mennonite Church | Fulton County, OH (35.7 adherents per 1,000 people) | Indiana (0.281 adherents per 1,000 people) | Peoria-Pekin, IL (5.96 adherents per 1,000 people) |
| Evangelical Presbyterian Church | Wichita County, KS (49 adherents per 1,000 people) | Colorado (3.422 adherents per 1,000 people) | Wilmington, NC (8.23 adherents per 1,000 people) |
| Fellowship of Evangelical Bible Churches | Meade County, KS (30.4 adherents per 1,000 people) | Nebraska (0.542 adherents per 1,000 people) | Omaha, NE-IA (0.97 adherents per 1,000 people) |
| Free Methodist Church of North America | McPherson County, NE (159.5 adherents per 1,000 people) | Michigan (1.65 adherents per 1,000 people) | Jackson, MI (10.66 adherents per 1,000 people) |
| Friends (Quakers) | Northwest Arctic Borough, AK (205.9 adherents per 1,000 people) | Alaska (2.876 adherents per 1,000 people) | Kokomo, IN (8.1 adherents per 1,000 people) |
| Fundamental Methodist Conference, Inc. | Barry County, MO (15.2 adherents per 1,000 people) | Missouri (0.18 adherents per 1,000 people) | Springfield, MO (0.44 adherents per 1,000 people) |
| General Association of Regular Baptist Churches | Sherman County, NE (48.5 adherents per 1,000 people) | Indiana (6.036 adherents per 1,000 people) | Grand Rapids-Muskegon-Holland, MI (14.44 adherents per 1,000 people) |
| General Six Principle Baptists | Susquehanna County, PA (0.6 adherents per 1,000 people) | Pennsylvania (0.002 adherents per 1,000 people) | Not present in any metros |
| Greek Orthodox Archdiocese of America | Ashland County, OH (32.3 adherents per 1,000 people) | District Of Columbia (7.546 adherents per 1,000 people) | Steubenville-Weirton, OH-WV (9.66 adherents per 1,000 people) |
| Greek Orthodox Archdiocese of Vasiloupulis | Franklin County, VT (37.9 adherents per 1,000 people) | Nebraska (3.711 adherents per 1,000 people) | Lincoln, NE (18.58 adherents per 1,000 people) |
| Hindu | Saguache County, CO (1.7 congregations per 10,000 people) | Hawaii (0.066 congregations per 10,000 people) | Santa Fe, NM (0.2 congregations per 10,000 people) |
| Holy Orthodox Church in North America | Suffolk County, MA (0.9 adherents per 1,000 people) | Massachusetts (0.147 adherents per 1,000 people) | Harrisburg-Lebanon-Carlisle, PA (0.29 adherents per 1,000 people) |
| Hutterian Brethren | Faulk County, SD (151.5 adherents per 1,000 people) | South Dakota (7.154 adherents per 1,000 people) | Great Falls, MT (4.98 adherents per 1,000 people) |
| Independent Free Will Baptists Associations | Dickenson County, VA (131.6 adherents per 1,000 people) | Tennessee (2.077 adherents per 1,000 people) | Johnson City-Kingsport-Bristol, TN-VA (6.84 adherents per 1,000 people) |
| Independent, Charismatic Churches | Delaware County, OK (188.8 adherents per 1,000 people) | Colorado (12.688 adherents per 1,000 people) | Amarillo, TX (43.38 adherents per 1,000 people) |
| Independent, Non-Charismatic Churches | Williamsburg city, VA (125 adherents per 1,000 people) | Alaska (12.123 adherents per 1,000 people) | Danville, VA (44.3 adherents per 1,000 people) |
| International Church of the Foursquare Gospel | Washington County, CO (64.1 adherents per 1,000 people) | Oregon (13.102 adherents per 1,000 people) | Billings, MT (39.42 adherents per 1,000 people) |
| International Churches of Christ | Suffolk County, MA (8.9 adherents per 1,000 people) | District Of Columbia (4.356 adherents per 1,000 people) | Tallahassee, FL (1.53 adherents per 1,000 people) |
| International Council of Community Churches | Gunnison County, CO (43.6 adherents per 1,000 people) | District Of Columbia (0.788 adherents per 1,000 people) | Waterloo-Cedar Falls, IA (8.49 adherents per 1,000 people) |
| International Pentecostal Church of Christ | Johnson County, KY (38.6 adherents per 1,000 people) | Kentucky (0.307 adherents per 1,000 people) | Huntington-Ashland, WV-KY-OH (0.91 adherents per 1,000 people) |
| International Pentecostal Holiness Church | Kenedy County, TX (120.8 adherents per 1,000 people) | South Carolina (8.43 adherents per 1,000 people) | Florence, SC (24.61 adherents per 1,000 people) |
| Interstate & Foreign Landmark Missionary Baptists Association | Stone County, MS (92.8 adherents per 1,000 people) | Mississippi (3.647 adherents per 1,000 people) | Hattiesburg, MS (15.38 adherents per 1,000 people) |
| Jain | Monongalia County, WV (0.1 congregations per 10,000 people) | Connecticut (0.012 congregations per 10,000 people) | Elmira, NY (0.11 congregations per 10,000 people) |
| Jasper Baptist and Pleasant Valley Baptist Associations | Pickens County, GA (171.5 adherents per 1,000 people) | Georgia (0.865 adherents per 1,000 people) | Atlanta, GA (1.58 adherents per 1,000 people) |
| Jewish Estimate | Rockland County, NY (313.9 adherents per 1,000 people) | New York (87.154 adherents per 1,000 people) | West Palm Beach-Boca Raton, FL (147.63 adherents per 1,000 people) |
| Landmark Missionary Baptists, Independent Associations and Unaffiliated Churches | Wheeler County, OR (98.9 adherents per 1,000 people) | Mississippi (1.013 adherents per 1,000 people) | Yuba City, CA (1.03 adherents per 1,000 people) |
| Lutheran Church--Missouri Synod | Pierce County, NE (352.4 adherents per 1,000 people) | Nebraska (68.615 adherents per 1,000 people) | Sheboygan, WI (166.09 adherents per 1,000 people) |
| Macedonian Orthodox Church: American Diocese | Lake County, IN (4.1 adherents per 1,000 people) | New Jersey (0.357 adherents per 1,000 people) | Canton-Massillon, OH (1.97 adherents per 1,000 people) |
| Malankara Archdiocese of the Syrian Orthodox Church in North America | Schoharie County, NY (4.7 adherents per 1,000 people) | New York (0.07 adherents per 1,000 people) | Augusta-Aiken, GA-SC (0.31 adherents per 1,000 people) |
| Malankara Orthodox Syrian Church, American Diocese of the | Fort Bend County, TX (1.8 adherents per 1,000 people) | New York (0.282 adherents per 1,000 people) | New York-Northern New Jersey-Long Island, NY-NJ-CT-PA (CMSA) (0.28 adherents per 1,000 people) |
| Mennonite Brethren Churches, U.S. Conference of | Marion County, KS (109.6 adherents per 1,000 people) | South Dakota (1.806 adherents per 1,000 people) | Bellingham, WA (6.44 adherents per 1,000 people) |
| Mennonite Church USA | Marion County, KS (155.5 adherents per 1,000 people) | Kansas (5.318 adherents per 1,000 people) | Elkhart-Goshen, IN (47.95 adherents per 1,000 people) |
| Mennonite; Other Groups | Meade County, KS (113.2 adherents per 1,000 people) | South Dakota (0.935 adherents per 1,000 people) | Lima, OH (6.62 adherents per 1,000 people) |
| Midwest Congregational Christian Fellowship | Randolph County, IN (24.5 adherents per 1,000 people) | Indiana (0.162 adherents per 1,000 people) | Muncie, IN (1.14 adherents per 1,000 people) |
| Missionary Church, The | Adams County, IN (30.3 adherents per 1,000 people) | Indiana (2.727 adherents per 1,000 people) | Elkhart-Goshen, IN (29.82 adherents per 1,000 people) |
| Moravian Church in America--Alaska Province | Bethel Census Area, AK (133.4 adherents per 1,000 people) | Alaska (4.087 adherents per 1,000 people) | Anchorage, AK (0.07 adherents per 1,000 people) |
| Moravian Church in America--Northern Province | Edwards County, IL (42.7 adherents per 1,000 people) | Wisconsin (0.872 adherents per 1,000 people) | Allentown-Bethlehem-Easton, PA (11.64 adherents per 1,000 people) |
| Moravian Church in America--Southern Province | Forsyth County, NC (44.5 adherents per 1,000 people) | North Carolina (2.259 adherents per 1,000 people) | Greensboro--Winston-Salem--High Point, NC (12.5 adherents per 1,000 people) |
| Muslim Estimate | District of Columbia, DC (105.7 adherents per 1,000 people) | District Of Columbia (105.722 adherents per 1,000 people) | Washington-Baltimore, DC-MD-VA-WV (CMSA) (20.73 adherents per 1,000 people) |
| National Association of Congregational Christian Churches | Nantucket County, MA (40.3 adherents per 1,000 people) | Maine (2.918 adherents per 1,000 people) | Cheyenne, WY (11.84 adherents per 1,000 people) |
| National Association of Free Will Baptists | Oregon County, MO (201.3 adherents per 1,000 people) | Arkansas (9.826 adherents per 1,000 people) | Huntington-Ashland, WV-KY-OH (22.75 adherents per 1,000 people) |
| National Primitive Baptist Convention, USA | Gadsden County, FL (38.5 adherents per 1,000 people) | Alabama (3.819 adherents per 1,000 people) | Huntsville, AL (26.8 adherents per 1,000 people) |
| Netherlands Reformed Congregations | Douglas County, SD (62.8 adherents per 1,000 people) | Iowa (0.542 adherents per 1,000 people) | Sheboygan, WI (1.78 adherents per 1,000 people) |
| New Hope Baptist Association | Haralson County, GA (23.9 adherents per 1,000 people) | Georgia (0.339 adherents per 1,000 people) | Atlanta, GA (0.45 adherents per 1,000 people) |
| New Testament Association of Independent Baptist Churches and other Fundamental Baptist Associations/Fellowships | Jackson County, CO (79.3 adherents per 1,000 people) | Indiana (5.194 adherents per 1,000 people) | Saginaw-Bay City-Midland, MI (21.67 adherents per 1,000 people) |
| North American Baptist Conference | McIntosh County, ND (157.5 adherents per 1,000 people) | North Dakota (8.387 adherents per 1,000 people) | Bismarck, ND (14.2 adherents per 1,000 people) |
| "Old" Missionary Baptists Associations | Edmonson County, KY (284.6 adherents per 1,000 people) | Kentucky (2.409 adherents per 1,000 people) | Decatur, AL (8.26 adherents per 1,000 people) |
| Old Order Amish Church | LaGrange County, IN (171.7 adherents per 1,000 people) | Indiana (3.154 adherents per 1,000 people) | Elkhart-Goshen, IN (26.03 adherents per 1,000 people) |
| Old Order Mennonite | Scotland County, MO (113 adherents per 1,000 people) | Pennsylvania (0.997 adherents per 1,000 people) | Lancaster, PA (16.29 adherents per 1,000 people) |
| Old Order River Brethren | Franklin County, PA (2.6 adherents per 1,000 people) | Pennsylvania (0.039 adherents per 1,000 people) | Lancaster, PA (0.3 adherents per 1,000 people) |
| Original Free Will Baptists | Greene County, NC (143.9 adherents per 1,000 people) | North Carolina (5.717 adherents per 1,000 people) | Greenville, NC (36.34 adherents per 1,000 people) |
| Orthodox Church in America: Albanian Orthodox Archdiocese | Suffolk County, MA (4 adherents per 1,000 people) | Massachusetts (0.559 adherents per 1,000 people) | Jamestown,NY (1.43 adherents per 1,000 people) |
| Orthodox Church in America: Bulgarian Diocese | Allen County, IN (0.9 adherents per 1,000 people) | Illinois (0.16 adherents per 1,000 people) | Fort Wayne, IN (0.57 adherents per 1,000 people) |
| Orthodox Church in America: Romanian Orthodox Episcopate of America | Broward County, FL (1.4 adherents per 1,000 people) | Illinois (0.242 adherents per 1,000 people) | Miami-Fort Lauderdale, FL (CMSA) (1.42 adherents per 1,000 people) |
| Orthodox Church in America: Territorial Dioceses | Lake and Peninsula Borough, AK (191.4 adherents per 1,000 people) | Alaska (31.901 adherents per 1,000 people) | Anchorage, AK (37 adherents per 1,000 people) |
| Orthodox Presbyterian Church, The | Tripp County, SD (19.8 adherents per 1,000 people) | Montana (0.669 adherents per 1,000 people) | Sheboygan, WI (8.73 adherents per 1,000 people) |
| Patriarchal Parishes of the Russian Orthodox Church in the USA | Seneca County, NY (0.3 congregations per 10,000 people) | New Hampshire (0.008 congregations per 10,000 people) | Erie, PA (0.04 congregations per 10,000 people) |
| Pentecostal Church of God | Lewis County, ID (65.9 adherents per 1,000 people) | Arkansas (3.847 adherents per 1,000 people) | Joplin, MO (8.15 adherents per 1,000 people) |
| Presbyterian Church (U.S.A.) | Rockbridge County, VA (154.7 adherents per 1,000 people) | Pennsylvania (26.44 adherents per 1,000 people) | Sharon, PA (85.38 adherents per 1,000 people) |
| Presbyterian Church in America | Campbell County, SD (123.5 adherents per 1,000 people) | Mississippi (6.6 adherents per 1,000 people) | Jackson, MS (17.51 adherents per 1,000 people) |
| Primitive Baptist Churches--Old Line | Alleghany County, NC (8.4 congregations per 10,000 people) | Alabama (0.331 congregations per 10,000 people) | Jackson, TN (0.56 congregations per 10,000 people) |
| Primitive Baptists, Eastern District Association of | Hancock County, TN (133.8 adherents per 1,000 people) | Tennessee (0.777 adherents per 1,000 people) | Johnson City-Kingsport-Bristol, TN-VA (8.24 adherents per 1,000 people) |
| Primitive Methodist Church in the USA | Lafayette County, WI (11.3 adherents per 1,000 people) | Rhode Island (0.29 adherents per 1,000 people) | Scranton--Wilkes-Barre--Hazleton, PA (1.65 adherents per 1,000 people) |
| Progressive Primitive Baptists | Irwin County, GA (47 adherents per 1,000 people) | Georgia (0.883 adherents per 1,000 people) | Savannah, GA (3 adherents per 1,000 people) |
| Protestant Reformed Churches in America | Lyon County, IA (21.2 adherents per 1,000 people) | Michigan (0.367 adherents per 1,000 people) | Grand Rapids-Muskegon-Holland, MI (3.29 adherents per 1,000 people) |
| Reformed Baptist Churches | Wallowa County, OR (1.4 congregations per 10,000 people) | Wyoming (0.02 congregations per 10,000 people) | Topeka, KS (0.12 congregations per 10,000 people) |
| Reformed Church in America | Sioux County, IA (357.1 adherents per 1,000 people) | Iowa (12.544 adherents per 1,000 people) | Grand Rapids-Muskegon-Holland, MI (58.77 adherents per 1,000 people) |
| Reformed Church in the United States | McPherson County, SD (100.2 adherents per 1,000 people) | South Dakota (1.648 adherents per 1,000 people) | Sioux Falls, SD (0.96 adherents per 1,000 people) |
| Reformed Mennonite Church | Oceana County, MI (1.4 adherents per 1,000 people) | Pennsylvania (0.013 adherents per 1,000 people) | Lima, OH (0.26 adherents per 1,000 people) |
| Romanian Orthodox Archdiocese in America and Canada | Worcester County, MA (1.5 adherents per 1,000 people) | Nevada (0.315 adherents per 1,000 people) | Las Vegas, NV-AZ (0.4 adherents per 1,000 people) |
| Russian Orthodox Church Outside of Russia | Sevier County, AR (0.6 congregations per 10,000 people) | District Of Columbia (0.017 congregations per 10,000 people) | Erie, PA (0.07 congregations per 10,000 people) |
| Salvation Army, The | Skagway-Hoonah-Angoon Census Area, AK (94.3 adherents per 1,000 people) | Hawaii (7.216 adherents per 1,000 people) | Modesto, CA (32.92 adherents per 1,000 people) |
| Separate Baptists in Christ | Russell County, KY (119.2 adherents per 1,000 people) | Kentucky (1.674 adherents per 1,000 people) | Kokomo, IN (16.54 adherents per 1,000 people) |
| Serbian Orthodox Church in the USA | Ben Hill County, GA (37.7 adherents per 1,000 people) | District Of Columbia (0.97 adherents per 1,000 people) | Steubenville-Weirton, OH-WV (6.14 adherents per 1,000 people) |
| Serbian Orthodox Church in the USA (New Gracanica Metropolitanate) | Amador County, CA (0.3 congregations per 10,000 people) | District Of Columbia (0.017 congregations per 10,000 people) | Johnstown, PA (0.04 congregations per 10,000 people) |
| Seventh-day Adventist Church | Walla Walla County, WA (107.6 adherents per 1,000 people) | District Of Columbia (13.125 adherents per 1,000 people) | Benton Harbor, MI (55.01 adherents per 1,000 people) |
| Sikh | Sutter County, CA (1 congregations per 10,000 people) | District Of Columbia (0.052 congregations per 10,000 people) | Yuba City, CA (0.57 congregations per 10,000 people) |
| Southern Baptist Convention | Hancock County, TN (961.4 adherents per 1,000 people) | Mississippi (322.162 adherents per 1,000 people) | Gadsden, AL (470.72 adherents per 1,000 people) |
| Southwide Baptist Fellowship | Calhoun County, GA (1.6 congregations per 10,000 people) | North Carolina (0.091 congregations per 10,000 people) | Chattanooga, TN (0.3 congregations per 10,000 people) |
| Strict Baptists | Teton County, MT (1.2 adherents per 1,000 people) | Montana (0.009 adherents per 1,000 people) | Sheboygan, WI (0.06 adherents per 1,000 people) |
| Syrian Orthodox Church of Antioch | Bergen County, NJ (3.7 adherents per 1,000 people) | New Jersey (0.386 adherents per 1,000 people) | Chico-Paradise, CA (0.74 adherents per 1,000 people) |
| Tao | Custer County, CO (2.9 congregations per 10,000 people) | District Of Columbia (0.017 congregations per 10,000 people) | Champaign-Urbana, IL (0.06 congregations per 10,000 people) |
| Two-Seed-in-the-Spirit Predestinarian Baptists | Jack County, TX (3.3 adherents per 1,000 people) | Indiana (0.003 adherents per 1,000 people) | Huntsville, AL (0.01 adherents per 1,000 people) |
| Ukrainian Orthodox Church of the USA | Charlottesville city, VA (6.7 adherents per 1,000 people) | Pennsylvania (0.871 adherents per 1,000 people) | Binghamton, NY (4.16 adherents per 1,000 people) |
| Unitarian Universalist Association of Congregations | Nantucket County, MA (15.3 adherents per 1,000 people) | Massachusetts (4.069 adherents per 1,000 people) | Barnstable-Yarmouth, MA (NECMA) (8.03 adherents per 1,000 people) |
| United Church of Christ | Blaine County, NE (351.6 adherents per 1,000 people) | Connecticut (36.637 adherents per 1,000 people) | Reading, PA (98.05 adherents per 1,000 people) |
| United Methodist Church, The | Covington city, VA (338.6 adherents per 1,000 people) | Oklahoma (93.546 adherents per 1,000 people) | Cumberland, MD-WV (150.41 adherents per 1,000 people) |
| United Reformed Churches in North America | O'Brien County, IA (21.6 adherents per 1,000 people) | Michigan (0.363 adherents per 1,000 people) | Grand Rapids-Muskegon-Holland, MI (3.02 adherents per 1,000 people) |
| Universal Fellowship of Metropolitan Community Churches | Fairfax city, VA (3.3 adherents per 1,000 people) | District Of Columbia (1.028 adherents per 1,000 people) | Dallas-Fort Worth, TX (CMSA) (0.7 adherents per 1,000 people) |
| Vineyard USA | Frontier County, NE (45.2 adherents per 1,000 people) | Idaho (2.279 adherents per 1,000 people) | Champaign-Urbana, IL (15.32 adherents per 1,000 people) |
| Wayne Trail Missionary Baptist Association | Allen County, OH (11.2 adherents per 1,000 people) | Ohio (0.21 adherents per 1,000 people) | Lima, OH (10.36 adherents per 1,000 people) |
| Wesleyan Church, The | Prairie County, MT (260.2 adherents per 1,000 people) | South Dakota (10.419 adherents per 1,000 people) | Waterloo-Cedar Falls, IA (27.81 adherents per 1,000 people) |
| Wisconsin Evangelical Lutheran Synod | Jefferson County, WI (224.9 adherents per 1,000 people) | Wisconsin (39.456 adherents per 1,000 people) | La Crosse, WI-MN (75.28 adherents per 1,000 people) |
| Zoroastrian | San Benito County, CA (0.2 congregations per 10,000 people) | Arizona (0.006 congregations per 10,000 people) | Eugene-Springfield, OR (0.03 congregations per 10,000 people) |