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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
American Association of Lutheran Churches Evangelical Protestant Lutheran 1 65 0.53
Assemblies of God Evangelical Protestant Pentecostal 2 685 5.55
Associate Reformed Presbyterian Church Evangelical Protestant Presbyterian-Reformed 1 54 0.44
Black Baptists Estimate Evangelical Protestant Baptist --- 817 6.62
Brethren Church, The (Ashland, Ohio) Evangelical Protestant European Free-Church 1 131 1.06
Catholic Church Catholic Catholicism 4 18,258 147.99
Christian Churches and Churches of Christ Evangelical Protestant Baptist 1 167 1.35
Church of Christ, Scientist Other Christian Science 1 --- ---
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 2 269 2.18
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 1 277 2.25
Church of the Brethren Evangelical Protestant European Free-Church 8 1,958 15.87
Church of the Nazarene Evangelical Protestant Holiness 2 246 1.99
Churches of Christ Evangelical Protestant Baptist 1 120 0.97
Churches of God, General Conference Evangelical Protestant Presbyterian-Reformed 3 200 1.62
Eastern Pennsylvania Mennonite Church Evangelical Protestant European Free-Church 1 53 0.43
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 3 1,308 10.60
Evangelical Lutheran Church in America Mainline Protestant Lutheran 23 9,475 76.80
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 1 72 0.58
Free Methodist Church of North America Evangelical Protestant Holiness 1 31 0.25
Friends (Quakers) Mainline Protestant European Free-Church 1 24 0.19
Jewish Other Judaism 1 0 0.00
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 1 266 2.16
Mennonite Church USA Evangelical Protestant European Free-Church 2 34 0.28
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 3 608 4.93
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed 1 68 0.55
Reformed Episcopal Church Evangelical Protestant Episcopalianism/Anglicanism 1 146 1.18
Seventh-day Adventist Church Evangelical Protestant Adventist 1 230 1.86
Southern Baptist Convention Evangelical Protestant Baptist 9 3,615 29.30
United Church of Christ Mainline Protestant Presbyterian-Reformed 10 3,213 26.04
United Methodist Church, The Mainline Protestant Methodist/Pietist 44 13,736 111.34
Totals: 131 56,126  

The population of Carroll County, Maryland was 123,372 in 1990; in 1980 it was 96,356. The total population changed 28.0%. The adherent totals of the religious groups listed above (56,126) included 45.5% of the total population in 1990.

* 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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