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Mahoning County (Ohio)

Religious Traditions, 2010

27,561 9,651 22,947 71,180 4,037 1,437 102,010
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 % Change
Assemblies of God Evangelical Protestant Pentecostal +1 +3445 +71.8%
Christian Churches and Churches of Christ Evangelical Protestant Baptist -2 +401 +12.1%
Salvation Army Evangelical Protestant Holiness +1 +377 +193.3%
Church of the Brethren Evangelical Protestant European Free-Church +1 +181 +102.8%
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal +1 +122 +1355.6%
Church of God (Anderson, Indiana) Evangelical Protestant Holiness +1 +72 +22.3%
Evangelical Presbyterian Church Evangelical Protestant Presbyterian-Reformed 0 +49 +11.3%
American Carpatho-Russian Orthodox Diocese Orthodox Eastern Liturgical (Orthodox) 0 +14 +10.3%
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 0 +14 +5.9%
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed 0 +7 +5.7%
Allegheny Wesleyan Methodist Connection Evangelical Protestant Methodist/Pietist 0 -6 -28.6%
Christian and Missionary Alliance, The Evangelical Protestant Holiness 0 -8 -13.8%
Churches of Christ Evangelical Protestant Baptist -1 -21 -3%
Free Methodist Church of North America Evangelical Protestant Holiness -1 -29 -11.9%
Unitarian Universalist Association of Congregations Other Liberal 0 -50 -25%
Southern Baptist Convention Evangelical Protestant Baptist +8 -52 -3%
Evangelical Congregational Church, The Evangelical Protestant Methodist/Pietist 0 -142 -56.3%
Seventh-day Adventist Church Evangelical Protestant Adventist -2 -188 -23.8%
Converge Worldwide/Baptist General Conference Evangelical Protestant Baptist -1 -221 -16.2%
Mennonite Church USA Evangelical Protestant European Free-Church -3 -312 -68.4%
Church of the Nazarene Evangelical Protestant Holiness -1 -329 -28.4%
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 0 -506 -30.9%
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism -2 -1108 -68.5%
Christian Church (Disciples of Christ) Mainline Protestant Baptist -1 -1192 -47%
African Methodist Episcopal Zion Church Black Protestant Methodist/Pietist 0 -1286 -84.4%
Evangelical Lutheran Church in America Mainline Protestant Lutheran -3 -1508 -18.2%
American Baptist Churches in the USA Mainline Protestant Baptist -3 -1818 -53.5%
United Methodist Church, The Mainline Protestant Methodist/Pietist +1 -2469 -27%
United Church of Christ Mainline Protestant Presbyterian-Reformed -5 -2975 -68.5%
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed +1 -4246 -47.5%
Catholic Church Catholic Catholicism +1 -38805 -35.3%
Association of Free Lutheran Congregations Evangelical Protestant Lutheran --- --- ---
Church of Christ, Scientist Other Christian Science 0 --- ---
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) 0 --- ---
National Association of Free Will Baptists Evangelical Protestant Baptist --- --- ---
Orthodox Church in America Orthodox Eastern Liturgical (Orthodox) +1 --- ---
Primitive Methodist Church in the USA Evangelical Protestant Methodist/Pietist 0 --- ---
Ukrainian Orthodox Church of the USA Orthodox Eastern Liturgical (Orthodox) --- --- ---
Totals: -8 -52589 -31.3%

The population of Mahoning County, Ohio was 264,806 in 1990; in 1980 it was 289,487. The total population changed -8.5%. The adherent totals of the religious groups listed above (187,851) included 70.9% of the total population in 1990.

The population of Mahoning County, Ohio was 238,823 in 2010; in 2000 it was 257,555. The total population changed -7.3%. The adherent totals of the religious groups listed above (136,813) included 57.3% of the total population in 2010.

* 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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