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Peoria County (Illinois)

Religious Traditions, 2010

30,685 3,482 18,343 26,165 396 22,276 85,147
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
Seventh-day Adventist Church Evangelical Protestant Adventist 3 585 3.19
American Baptist Association, The Evangelical Protestant Baptist 2 124 0.68
American Baptist Churches in the USA Mainline Protestant Baptist 3 1,094 5.96
Baptist Missionary Association of America Evangelical Protestant Baptist 1 15 0.08
Christian Church (Disciples of Christ) Mainline Protestant Baptist 5 2,491 13.58
Christian Churches and Churches of Christ Evangelical Protestant Baptist 3 597 3.25
Churches of Christ Evangelical Protestant Baptist 5 605 3.30
Conservative Baptist Association of America Evangelical Protestant Baptist 1 800 4.36
General Association of Regular Baptist Churches Evangelical Protestant Baptist 1 71 0.39
National Association of Free Will Baptists Evangelical Protestant Baptist 1 107 0.58
New Testament Association of Independent Baptist Churches and other Fundamental Bapti Evangelical Protestant Baptist 5 1,397 7.62
Southern Baptist Convention Evangelical Protestant Baptist 10 3,604 19.65
Catholic Church Catholic Catholicism 19 35,462 193.32
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) 1 555 3.03
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 4 1,009 5.50
Apostolic Christian Church of America, Inc. Evangelical Protestant European Free-Church 1 1,042 5.68
Apostolic Christian Churches (Nazarene) Evangelical Protestant European Free-Church 1 72 0.39
Church of the Brethren Evangelical Protestant European Free-Church 1 199 1.08
Fellowship of Evangelical Churches Evangelical Protestant European Free-Church 1 731 3.99
Mennonite Church USA Evangelical Protestant European Free-Church 3 174 0.95
Church of God (Anderson, Indiana) Evangelical Protestant Holiness 3 240 1.31
Church of the Nazarene Evangelical Protestant Holiness 5 547 2.98
Free Methodist Church of North America Evangelical Protestant Holiness 2 133 0.73
Missionary Church, The Evangelical Protestant Holiness 4 509 2.77
Salvation Army Evangelical Protestant Holiness 1 601 3.28
Jewish Other Judaism 3 800 4.36
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 3 855 4.66
Unitarian Universalist Association of Congregations Other Liberal 1 290 1.58
Evangelical Lutheran Church in America Mainline Protestant Lutheran 10 6,404 34.91
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 9 5,716 31.16
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran 1 50 0.27
Evangelical Covenant Church, The Evangelical Protestant Methodist/Pietist 1 105 0.57
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist 3 357 1.95
United Methodist Church, The Mainline Protestant Methodist/Pietist 26 9,938 54.18
Bahá'í Other Other Groups 1 85 0.46
Muslim Estimate Other Other Groups 5 3,027 16.50
Assemblies of God Evangelical Protestant Pentecostal 8 932 5.08
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 2 104 0.57
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 1 38 0.21
Vineyard USA Evangelical Protestant Pentecostal 1 162 0.88
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 10 3,593 19.59
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed 3 2,480 13.52
United Church of Christ Mainline Protestant Presbyterian-Reformed 6 1,745 9.51
Totals: 180 89,445  

The population of Peoria County, Illinois was 183,433 in 2000; in 1990 it was 182,827. The total population changed 0.3%. The adherent totals of the religious groups listed above (89,445) included 48.8% of the total population in 2000.

* 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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