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Allegheny County, Pennsylvania

Religious Traditions, 2010

78,101 14,268 139,551 9,606 460,672 38,781 482,369
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 % Change
Assemblies of God Evangelical Protestant Pentecostal +13 +7,888 +174.9%
American Baptist Churches in the USA Mainline Protestant Baptist +1 +4,539 +36.0%
Christian and Missionary Alliance, The Evangelical Protestant Holiness -2 +2,704 +78.0%
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints +5 +2,424 +124.6%
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed +4 +744 +105.2%
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist +1 +742 +356.7%
Southern Baptist Convention Evangelical Protestant Baptist +26 +581 +34.1%
Seventh-day Adventist Church Evangelical Protestant Adventist +2 +487 +33.8%
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal +1 +253 +58.3%
Reformed Presbyterian Church of North America Evangelical Protestant Presbyterian-Reformed +0 +244 +94.9%
Unitarian Universalist Association of Congregations Other Liberal -1 +201 +24.3%
Churches of Christ Evangelical Protestant Restoration Movement +0 +190 +25.1%
Evangelical Covenant Church, The Evangelical Protestant Methodist/Pietist +2 +101 +82.8%
Converge Worldwide/Baptist General Conference Evangelical Protestant Baptist +0 -13 -4.6%
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran -1 -44 -31.2%
Orthodox Presbyterian Church, The Evangelical Protestant Presbyterian-Reformed +1 -67 -34.4%
Metropolitan Community Churches, Universal Fellowship of Mainline Protestant Other Groups +0 -89 -66.4%
North American Baptist Conference Evangelical Protestant Baptist -1 -297 -65.9%
Open Bible Standard Churches, Inc. Evangelical Protestant Pentecostal +1 -439 -73.2%
Church of the Brethren Evangelical Protestant European Free-Church -1 -495 -62.7%
Christian Church (Disciples of Christ) Mainline Protestant Restoration Movement +0 -605 -43.2%
Church of the Nazarene Evangelical Protestant Holiness -1 -612 -34.4%
Free Methodist Church of North America Evangelical Protestant Holiness -2 -1,048 -84.0%
National Association of Congregational Christian Churches Mainline Protestant Presbyterian-Reformed -4 -1,108 -84.1%
Christian Methodist Episcopal Church Black Protestant Methodist/Pietist -1 -1,403 -79.9%
Church of God (Anderson, Indiana) Evangelical Protestant Holiness -1 -1,404 -83.6%
Christian Churches and Churches of Christ Evangelical Protestant Restoration Movement -2 -1,886 -36.7%
Salvation Army Evangelical Protestant Holiness -1 -3,741 -50.2%
United Church of Christ Mainline Protestant Presbyterian-Reformed -10 -3,897 -70.7%
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran -10 -4,784 -53.8%
African Methodist Episcopal Zion Church Black Protestant Methodist/Pietist +0 -7,018 -80.5%
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism -21 -8,191 -51.3%
Evangelical Lutheran Church in America Mainline Protestant Lutheran -33 -20,236 -45.0%
United Methodist Church, The Mainline Protestant Methodist/Pietist -33 -24,988 -36.1%
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed -46 -58,482 -57.7%
Catholic Church Catholic Catholicism -86 -300,394 -39.5%
Associate Reformed Presbyterian Church Evangelical Protestant Presbyterian-Reformed --- --- ---
Christian Brethren Evangelical Protestant Ind. Fundamentalist -4 --- ---
Conservative Baptist Association of America Evangelical Protestant Baptist -2 --- ---
Primitive Methodist Church in the USA Evangelical Protestant Methodist/Pietist +0 --- ---
Totals: -206 -420,143 -39%

The population of Allegheny County, Pennsylvania was 1,223,348 in 2010; in 2000 it was 1,281,666. The total population changed -4.6%. The adherent totals of the religious groups listed above (740,979) included 60.6% of the total population in 2010.

The population of Allegheny County, Pennsylvania was 1,450,085 in 1980. The adherent totals of the religious groups listed above (1,082,374) included 74.6% 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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