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Carroll County (Maryland)

Religious Traditions, 2010

13,764 24,903 30,551 226 2,472 95,218
Evangelical Protestant Mainline Protestant Catholic Orthodox 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
Catholic Church Catholic Catholicism 4 30,551 182.79
United Methodist Church, The Mainline Protestant Methodist/Pietist 41 13,734 82.17
Evangelical Lutheran Church in America Mainline Protestant Lutheran 18 7,294 43.64
Non-denominational Evangelical Protestant
19 4,101 24.54
Southern Baptist Convention Evangelical Protestant Baptist 9 3,780 22.62
United Church of Christ Mainline Protestant Presbyterian-Reformed 10 2,298 13.75
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 3 1,483 8.87
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed 2 1,450 8.68
Church of the Brethren Evangelical Protestant European Free-Church 6 1,107 6.62
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 3 912 5.46
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 2 894 5.35
Buddhism, Theravada Other Other Groups 2 792 4.74
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 3 645 3.86
Assemblies of God Evangelical Protestant Pentecostal 3 391 2.34
Church of the Nazarene Evangelical Protestant Holiness 3 350 2.09
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 1 293 1.75
Seventh-day Adventist Church Evangelical Protestant Adventist 2 292 1.75
Wesleyan Church, The Evangelical Protestant Holiness 1 189 1.13
Associate Reformed Presbyterian Church Evangelical Protestant Presbyterian-Reformed 3 185 1.11
Christian Churches and Churches of Christ Evangelical Protestant Baptist 1 153 0.92
Churches of God, General Conference Evangelical Protestant Presbyterian-Reformed 4 148 0.89
Unitarian Universalist Association of Congregations Other Liberal 1 143 0.86
Churches of Christ Evangelical Protestant Baptist 2 140 0.84
Malankara Archdiocese of the Syrian Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) 1 126 0.75
Antiochian Orthodox Christian Archdiocese of North America, The Orthodox Eastern Liturgical (Orthodox) 1 100 0.60
Brethren Church, The (Ashland, Ohio) Evangelical Protestant European Free-Church 1 98 0.59
Converge Worldwide/Baptist General Conference Evangelical Protestant Baptist 1 90 0.54
Bahá'í Other Other Groups 1 54 0.32
Free Methodist Church of North America Evangelical Protestant Holiness 1 45 0.27
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 1 40 0.24
Friends General Conference and Friends United Meeting, dually aligned meetings* Mainline Protestant European Free-Church 1 38 0.23
Mennonite Church USA Evangelical Protestant European Free-Church 1 0 0.00
American Presbyterian Church Evangelical Protestant Presbyterian-Reformed 1 --- ---
Anglican Church in North America Evangelical Protestant Episcopalianism/Anglicanism 2 --- ---
Jehovah's Witnesses Other Adventist 2 --- ---
Reformed Presbyterian Church Hanover Presbytery Evangelical Protestant Presbyterian-Reformed 1 --- ---
Totals: 158 71,916  

The population of Carroll County, Maryland was 167,134 in 2010; in 2000 it was 150,897. The total population changed 10.8%. The adherent totals of the religious groups listed above (71,916) 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 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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