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Westmoreland County, Pennsylvania

Religious Traditions, 2010

26,600 1,320 67,009 2,036 121,691 1,164 145,349
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
Seventh-day Adventist Church Evangelical Protestant Adventist +1 +74 +101.4%
American Baptist Churches in the USA Mainline Protestant Baptist -2 -1,652 -51.6%
North American Baptist Conference Evangelical Protestant Baptist +0 --- ---
Southern Baptist Convention Evangelical Protestant Baptist +8 +318 +308.7%
Catholic Church Catholic Catholicism -19 -28,902 -19.2%
Church of Christ, Scientist Other Christian Science +0 --- ---
American Carpatho-Russian Orthodox Diocese Orthodox Eastern Liturgical (Orthodox) +0 -51 -23.6%
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) +0 --- ---
Orthodox Church in America Orthodox Eastern Liturgical (Orthodox) +0 --- ---
Ukrainian Orthodox Church of the USA Orthodox Eastern Liturgical (Orthodox) --- --- ---
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism -2 -970 -71.2%
Brethren Church, The (Ashland, Ohio) Evangelical Protestant European Free-Church +1 +105 +38.9%
Church of the Brethren Evangelical Protestant European Free-Church -1 -292 -21.5%
Mennonite Church USA Evangelical Protestant European Free-Church +1 -33 -14.2%
Christian and Missionary Alliance, The Evangelical Protestant Holiness +0 +1,019 +51.2%
Church of God (Anderson, Indiana) Evangelical Protestant Holiness +0 +46 +10.7%
Church of the Nazarene Evangelical Protestant Holiness +1 -28 -4.9%
Free Methodist Church of North America Evangelical Protestant Holiness -4 -221 -69.7%
Salvation Army Evangelical Protestant Holiness -1 +602 +149.4%
Wesleyan Church, The Evangelical Protestant Holiness -2 -464 -56.7%
Christian Brethren Evangelical Protestant Ind. Fundamentalist +0 --- ---
Independent Fundamental Churches of America Evangelical Protestant Ind. Fundamentalist -3 --- ---
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints +0 +378 +141.0%
Unitarian Universalist Association of Congregations Other Liberal +1 +59 +83.1%
Evangelical Lutheran Church in America Mainline Protestant Lutheran -8 -4,726 -18.7%
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran -1 -465 -49.6%
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran +0 -111 -58.7%
African Methodist Episcopal Zion Church Black Protestant Methodist/Pietist +0 -249 -68.0%
Allegheny Wesleyan Methodist Connection Evangelical Protestant Methodist/Pietist -1 -37 -69.8%
Primitive Methodist Church in the USA Evangelical Protestant Methodist/Pietist +1 --- ---
United Methodist Church, The Mainline Protestant Methodist/Pietist -5 -1,444 -4.8%
Assemblies of God Evangelical Protestant Pentecostal -1 -1,442 -42.7%
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal +0 -6 -8.0%
International Pentecostal Holiness Church Evangelical Protestant Pentecostal +0 -31 -7.3%
Open Bible Standard Churches, Inc. Evangelical Protestant Pentecostal -2 --- ---
Churches of God, General Conference Evangelical Protestant Presbyterian-Reformed +2 -252 -12.6%
Conservative Congregational Christian Conference Evangelical Protestant Presbyterian-Reformed --- --- ---
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed -9 -5,648 -31.6%
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed +2 +577 +154.7%
United Church of Christ Mainline Protestant Presbyterian-Reformed -4 -3,781 -55.0%
Christian Church (Disciples of Christ) Mainline Protestant Restoration Movement -1 -219 -23.3%
Christian Churches and Churches of Christ Evangelical Protestant Restoration Movement -1 -299 -9.9%
Churches of Christ Evangelical Protestant Restoration Movement +0 +97 +36.7%
Totals: -49 -48,048 -19%

The population of Westmoreland County, Pennsylvania was 365,169 in 2010; in 2000 it was 369,993. The total population changed -1.3%. The adherent totals of the religious groups listed above (219,820) included 60.2% of the total population in 2010.

The population of Westmoreland County, Pennsylvania was 370,321 in 1990; in 1980 it was 392,294. The total population changed -5.6%. The adherent totals of the religious groups listed above (264,548) included 71.4% 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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