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Big Horn County (Montana)

Religious Traditions, 2010

1,770 711 5,102 825 4,457
Evangelical Protestant Mainline Protestant 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]


Religious Bodies Tradition Family Congregations Adherents Adherence Rate
Non-denominational Evangelical Protestant
3 212 16.48
Jehovah's Witnesses Other Adventist 1 --- ---
Seventh-day Adventist Church Evangelical Protestant Adventist 1 33 2.57
American Baptist Churches in the USA Mainline Protestant Baptist 5 437 33.97
Conservative Baptist Association of America Evangelical Protestant Baptist 1 --- ---
Southern Baptist Convention Evangelical Protestant Baptist 1 122 9.48
Catholic Church Catholic Catholicism 6 5,102 396.58
Hutterian Brethren Evangelical Protestant Communal 1 --- ---
Church of God in Christ, Mennonite Evangelical Protestant European Free-Church 1 84 6.53
Mennonite Church USA Evangelical Protestant European Free-Church 1 79 6.14
Christian and Missionary Alliance, The Evangelical Protestant Holiness 1 48 3.73
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 1 802 62.34
Evangelical Lutheran Church in America Mainline Protestant Lutheran 1 97 7.54
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 2 230 17.88
United Methodist Church, The Mainline Protestant Methodist/Pietist 1 101 7.85
Bahá'í Other Other Groups 0 23 1.79
New Apostolic Church of North America, National Organization of the Other Other Groups 2 --- ---
Assemblies of God Evangelical Protestant Pentecostal 2 66 5.13
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 1 248 19.28
Open Bible Standard Churches, Inc. Evangelical Protestant Pentecostal 1 85 6.61
Pentecostal Church of God Evangelical Protestant Pentecostal 3 326 25.34
United Pentecostal Church International Evangelical Protestant Pentecostal 1 --- ---
Conservative Congregational Christian Conference Evangelical Protestant Presbyterian-Reformed 1 237 18.42
United Church of Christ Mainline Protestant Presbyterian-Reformed 1 76 5.91
Totals: 39 8,408  

The population of Big Horn County, Montana was 12,865 in 2010; in 2000 it was 12,671. The total population changed 1.5%. The adherent totals of the religious groups listed above (8,408) included 65.4% 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 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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