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Religious Traditions, 2010

64,625 13,371 86,858 1,486 182,532 26,045 523,017
Evangelical Protestant Black Protestant Mainline Protestant Orthodox 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
Catholic Church Catholic Catholicism 45 103,060 173.4
United Methodist Church, The Mainline Protestant Methodist/Pietist 170 60,489 101.8
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 38 18,696 31.5
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 38 16,957 28.5
Evangelical Lutheran Church in America Mainline Protestant Lutheran 11 7,822 13.2
Southern Baptist Convention Evangelical Protestant Baptist 9 4,279 7.2
American Baptist Churches in the USA Mainline Protestant Baptist 10 3,524 5.9
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 7 1,998 3.4
Church of the Nazarene Evangelical Protestant Holiness 10 1,885 3.2
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed 7 1,829 3.1
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 12 1,697 2.9
Assemblies of God Evangelical Protestant Pentecostal 12 1,522 2.6
Jewish Other Judaism 3 1,439 2.4
Seventh-day Adventist Church Evangelical Protestant Adventist 11 1,403 2.4
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 3 1,362 2.3
Churches of Christ Evangelical Protestant Baptist 9 1,155 1.9
Unitarian Universalist Association of Congregations Other Liberal 2 1,105 1.9
Salvation Army Evangelical Protestant Holiness 2 959 1.6
Old Order Amish Evangelical Protestant European Free-Church 6 958 1.6
Friends (Quakers) Mainline Protestant European Free-Church 8 921 1.5
Christian Churches and Churches of Christ Evangelical Protestant Baptist 7 876 1.5
Church of God (Anderson, Indiana) Evangelical Protestant Holiness 5 744 1.3
Mennonite Church Evangelical Protestant European Free-Church 7 727 1.2
Christian and Missionary Alliance, The Evangelical Protestant Holiness 6 647 1.1
United Church of Christ Mainline Protestant Presbyterian-Reformed 2 633 1.1
Converge Worldwide/Baptist General Conference Evangelical Protestant Baptist 2 610 1.0
African Methodist Episcopal Zion Church Black Protestant Methodist/Pietist 2 342 0.6
Conservative Baptist Association of America Evangelical Protestant Baptist 1 308 0.5
Orthodox Presbyterian Church, The Evangelical Protestant Presbyterian-Reformed 3 265 0.4
Church of the Brethren Evangelical Protestant European Free-Church 2 248 0.4
Christian Church (Disciples of Christ) Mainline Protestant Baptist 1 241 0.4
Bible Church of Christ, Inc. Evangelical Protestant Pentecostal 1 240 0.4
Latvian Evangelical Lutheran Church in America Mainline Protestant Lutheran 1 133 0.2
Christian Brethren Evangelical Protestant Ind. Fundamentalist 2 115 0.2
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran 1 86 0.1
Swedenborgian Church Other Spiritualist 1 72 0.1
Brethren Church, The (Ashland, Ohio) Evangelical Protestant European Free-Church 1 64 0.1
American Baptist Association, The Evangelical Protestant Baptist 2 50 0.1
Reformed Episcopal Church Evangelical Protestant Episcopalianism/Anglicanism 1 30 0.1
Metropolitan Community Churches, Universal Fellowship of Mainline Protestant Other Groups 0 25 0.0
Grace Brethren Churches, Fellowship of Mainline Protestant European Free-Church 1 16 0.0
Beachy Amish Mennonite Churches* Evangelical Protestant European Free-Church 1 0 ---
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist --- --- ---
Totals: 463 239,532  

The population of Delaware was 594,338 in 1980. The adherent totals of the religious groups listed above (239,532) included 40.3% of the total population in 1980.

* 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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