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Ontario County (New York)

Religious Traditions, 2010

5,366 180 12,950 25,433 750 878 62,374
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 9 25,433 235.64
United Methodist Church, The Mainline Protestant Methodist/Pietist 20 6,312 58.48
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 9 2,102 19.48
Wesleyan Church, The Evangelical Protestant Holiness 2 1,530 14.18
United Church of Christ Mainline Protestant Presbyterian-Reformed 6 1,513 14.02
Non-denominational Evangelical Protestant
12 1,424 13.19
American Baptist Churches in the USA Mainline Protestant Baptist 7 1,421 13.17
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 2 1,059 9.81
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 5 923 8.55
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 1 556 5.15
Salvation Army Evangelical Protestant Holiness 2 499 4.62
Evangelical Lutheran Church in America Mainline Protestant Lutheran 2 441 4.09
Romanian Orthodox Archdiocese in Americas Orthodox Eastern Liturgical (Orthodox) 1 400 3.71
Antiochian Orthodox Christian Archdiocese of North America, The Orthodox Eastern Liturgical (Orthodox) 1 350 3.24
Southern Baptist Convention Evangelical Protestant Baptist 2 294 2.72
Progressive National Baptist Convention, Inc. Black Protestant Baptist 1 180 1.67
Friends General Conference and Friends United Meeting, dually aligned meetings* Mainline Protestant European Free-Church 2 173 1.60
Reform Judaism Other Judaism 1 162 1.50
Christian Churches and Churches of Christ Evangelical Protestant Baptist 1 156 1.45
Seventh-day Adventist Church Evangelical Protestant Adventist 1 122 1.13
Assemblies of God Evangelical Protestant Pentecostal 2 108 1.00
Unitarian Universalist Association of Congregations Other Liberal 1 90 0.83
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 2 88 0.82
Bahá'í Other Other Groups 1 70 0.65
National Association of Congregational Christian Churches Mainline Protestant Presbyterian-Reformed 1 65 0.60
Christian and Missionary Alliance, The Evangelical Protestant Holiness 1 43 0.40
Church of the Nazarene Evangelical Protestant Holiness 1 43 0.40
Calvary Chapel Fellowship Churches Evangelical Protestant Pentecostal 1 --- ---
Church of Christ, Scientist Other Christian Science 1 --- ---
Conservative Baptist Association of America Evangelical Protestant Baptist 2 --- ---
Elim Fellowship Evangelical Protestant Pentecostal 3 --- ---
General Association of Regular Baptist Churches Evangelical Protestant Baptist 2 --- ---
Independent Fundamental Churches of America Evangelical Protestant Ind. Fundamentalist 1 --- ---
Jehovah's Witnesses Other Adventist 3 --- ---
New Apostolic Church of North America, National Organization of the Other Other Groups 1 --- ---
United Pentecostal Church International Evangelical Protestant Pentecostal 1 --- ---
Totals: 111 45,557  

The population of Ontario County, New York was 107,931 in 2010; in 2000 it was 100,224. The total population changed 7.7%. The adherent totals of the religious groups listed above (45,557) included 42.2% 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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