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Delaware County (Pennsylvania)

Religious Traditions, 2010

24,456 5,617 52,224 262,506 5,096 9,009 200,071
Evangelical Protestant Black 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 54 240,787 439.67
Jewish Other Judaism 10 36,716 67.04
United Methodist Church, The Mainline Protestant Methodist/Pietist 54 21,247 38.80
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 35 18,463 33.71
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 33 15,836 28.92
Black Baptists Estimate Evangelical Protestant Baptist --- 14,575 26.61
Evangelical Lutheran Church in America Mainline Protestant Lutheran 22 9,637 17.60
American Baptist Churches in the USA Mainline Protestant Baptist 21 5,025 9.18
Friends (Quakers) Mainline Protestant European Free-Church 14 2,329 4.25
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 3 1,018 1.86
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed 7 798 1.46
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 3 794 1.45
African Methodist Episcopal Zion Church Black Protestant Methodist/Pietist 2 684 1.25
Assemblies of God Evangelical Protestant Pentecostal 6 671 1.23
United Church of Christ Mainline Protestant Presbyterian-Reformed 3 636 1.16
Church of the Nazarene Evangelical Protestant Holiness 3 567 1.04
Independent, Non-Charismatic Churches Evangelical Protestant
1 550 1.00
Mennonite Church USA Evangelical Protestant European Free-Church 4 422 0.77
Unitarian Universalist Association of Congregations Other Liberal 1 362 0.66
Seventh-day Adventist Church Evangelical Protestant Adventist 2 354 0.65
Churches of Christ Evangelical Protestant Baptist 5 328 0.60
Southern Baptist Convention Evangelical Protestant Baptist 3 235 0.43
Reformed Episcopal Church Evangelical Protestant Episcopalianism/Anglicanism 2 217 0.40
Christian Brethren Evangelical Protestant Ind. Fundamentalist 3 213 0.39
Wesleyan Church, The Evangelical Protestant Holiness 2 207 0.38
National Association of Congregational Christian Churches Mainline Protestant Presbyterian-Reformed 1 206 0.38
Christian Churches and Churches of Christ Evangelical Protestant Baptist 1 184 0.34
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 2 180 0.33
Salvation Army Evangelical Protestant Holiness 2 164 0.30
Christian Church (Disciples of Christ) Mainline Protestant Baptist 1 151 0.28
Christian and Missionary Alliance, The Evangelical Protestant Holiness 2 138 0.25
Church of the Brethren Evangelical Protestant European Free-Church 1 137 0.25
Estonian Evangelical Lutheran Church Mainline Protestant Lutheran 1 94 0.17
Church of God (Anderson, Indiana) Evangelical Protestant Holiness 1 45 0.08
Church of God of Prophecy Evangelical Protestant Pentecostal 1 43 0.08
Church of Christ, Scientist Other Christian Science 3 --- ---
Conservative Baptist Association of America Evangelical Protestant Baptist 1 --- ---
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) 3 --- ---
Independent Fundamental Churches of America Evangelical Protestant Ind. Fundamentalist 5 --- ---
Orthodox Church in America Orthodox Eastern Liturgical (Orthodox) 1 --- ---
Totals: 319 374,013  

The population of Delaware County, Pennsylvania was 547,651 in 1990; in 1980 it was 555,007. The total population changed -1.3%. The adherent totals of the religious groups listed above (374,013) included 68.3% 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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