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Cook County, Illinois

Religious Traditions, 2010

432,975 148,895 202,114 53,276 1,947,223 312,636 2,097,556
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]

Reports


Religious Bodies Tradition Family Congregations Adherents Adherence Rate
African Methodist Episcopal Church Black Protestant Methodist/Pietist --- --- ---
African Methodist Episcopal Zion Church Black Protestant Methodist/Pietist --- --- ---
Christian Methodist Episcopal Church Black Protestant Methodist/Pietist --- --- ---
Church of God in Christ Black Protestant Pentecostal --- --- ---
Church of Our Lord Jesus Christ of the Apostolic Faith, Inc. Black Protestant Pentecostal --- --- ---
Cumberland Presbyterian Church in America Black Protestant Presbyterian-Reformed --- --- ---
Full Gospel Baptist Church Fellowship Black Protestant Baptist --- --- ---
National Baptist Convention of America, Inc. Black Protestant Baptist --- --- ---
National Baptist Convention, USA, Inc. Black Protestant Baptist --- --- ---
National Missionary Baptist Convention, Inc. Black Protestant Baptist --- --- ---
Progressive National Baptist Convention, Inc. Black Protestant Baptist --- --- ---
United Holy Church of America, Inc. Black Protestant Pentecostal --- --- ---
Catholic Church Catholic Catholicism 370 2,146,961 399.3
Polish National Catholic Church Catholic Catholicism --- --- ---
American Association of Lutheran Churches Evangelical Protestant Lutheran --- --- ---
American Baptist Association, The Evangelical Protestant Baptist 1 63 0.0
Anglican Church in North America Evangelical Protestant Episcopalianism/Anglicanism --- --- ---
Apostolic Christian Church of America, Inc. Evangelical Protestant European Free-Church 1 175 0.0
Apostolic Faith Mission of Portland, OR Evangelical Protestant Pentecostal --- --- ---
Assemblies of God Evangelical Protestant Pentecostal 66 14,013 2.6
Association of Free Lutheran Congregations Evangelical Protestant Lutheran 1 55 0.0
Baptist Missionary Association of America Evangelical Protestant Baptist 2 84 0.0
Brethren In Christ Church Evangelical Protestant European Free-Church --- --- ---
Calvary Chapel Fellowship Churches Evangelical Protestant Pentecostal 3 --- ---
Christian and Missionary Alliance, The Evangelical Protestant Holiness 22 2,884 0.5
Christian Brethren Evangelical Protestant Ind. Fundamentalist --- --- ---
Christian Churches and Churches of Christ Evangelical Protestant Restoration Movement 21 5,272 1.0
Christian Reformed Church in North America Evangelical Protestant Presbyterian-Reformed 28 12,251 2.3
Church of Christ (Holiness), U.S.A. Evangelical Protestant Holiness --- --- ---
Church of God (Anderson, Indiana) Evangelical Protestant Holiness 19 3,408 0.6
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 34 4,995 0.9
Church of God (Seventh Day) Evangelical Protestant Adventist --- --- ---
Church of God of Prophecy Evangelical Protestant Pentecostal 4 212 0.0
Church of the Brethren Evangelical Protestant European Free-Church 5 637 0.1
Church of the Lutheran Confession Evangelical Protestant Lutheran --- --- ---
Church of the Nazarene Evangelical Protestant Holiness 38 3,861 0.7
Churches of Christ Evangelical Protestant Restoration Movement 51 7,614 1.4
Communion of Reformed Evangelical Churches Evangelical Protestant Presbyterian-Reformed --- --- ---
Conservative Baptist Association of America Evangelical Protestant Baptist 16 3,220 0.6
Conservative Congregational Christian Conference Evangelical Protestant Presbyterian-Reformed 1 236 0.0
Converge Worldwide/Baptist General Conference Evangelical Protestant Baptist 43 9,353 1.7
Cumberland Presbyterian Church Evangelical Protestant Presbyterian-Reformed 2 53 0.0
Elim Fellowship Evangelical Protestant Pentecostal --- --- ---
Evangelical Congregational Church, The Evangelical Protestant Methodist/Pietist --- --- ---
Evangelical Covenant Church, The Evangelical Protestant Methodist/Pietist 38 9,841 1.8
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist 40 8,678 1.6
Evangelical Friends Church International* Evangelical Protestant European Free-Church --- --- ---
Evangelical Lutheran Synod Evangelical Protestant Lutheran --- --- ---
Fellowship of Evangelical Churches Evangelical Protestant European Free-Church 2 52 0.0
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 5 1,419 0.3
Free Methodist Church of North America Evangelical Protestant Holiness 4 226 0.0
Fundamental Baptist Fellowship Evangelical Protestant Baptist --- --- ---
General Association of Regular Baptist Churches Evangelical Protestant Baptist 4 849 0.2
Grace Gospel Fellowship Evangelical Protestant Ind. Fundamentalist --- --- ---
Independent Fundamental Churches of America Evangelical Protestant Ind. Fundamentalist --- --- ---
Independent, Charismatic Churches Evangelical Protestant Pentecostal 7 4,775 0.9
Independent, Non-Charismatic Churches Evangelical Protestant
----
17 8,027 1.5
International Churches of Christ Evangelical Protestant Baptist 1 4,582 0.9
International Pentecostal Holiness Church Evangelical Protestant Pentecostal 2 86 0.0
Korean Presbyterian Church Abroad Evangelical Protestant Presbyterian-Reformed --- --- ---
Korean Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed --- --- ---
Korean-American Presbyterian Church Evangelical Protestant Presbyterian-Reformed --- --- ---
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 135 63,814 11.9
Mennonite Church USA Evangelical Protestant European Free-Church 17 2,974 0.6
Missionary Church, The Evangelical Protestant Holiness 1 297 0.1
National Association of Free Will Baptists Evangelical Protestant Baptist 2 216 0.0
National Primitive Baptist Convention, USA Evangelical Protestant Baptist 5 669 0.1
Netherlands Reformed Congregations Evangelical Protestant Presbyterian-Reformed 1 31 0.0
New Testament Association of Independent Baptist Churches Evangelical Protestant Baptist --- --- ---
New Testament Association of Independent Baptist Churches and other Fundamental Bapti Evangelical Protestant Baptist 9 2,543 0.5
Non-denominational Evangelical Protestant
----
--- --- ---
North American Baptist Conference Evangelical Protestant Baptist 5 873 0.2
North American Lutheran Church Evangelical Protestant Lutheran --- --- ---
Open Bible Standard Churches, Inc. Evangelical Protestant Pentecostal --- --- ---
Orthodox Presbyterian Church, The Evangelical Protestant Presbyterian-Reformed 3 374 0.1
Pentecostal Church of God Evangelical Protestant Pentecostal 1 80 0.0
Pentecostal Fire-Baptized Holiness Church Evangelical Protestant Pentecostal --- --- ---
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed 13 1,403 0.3
Primitive Baptist Church, The Evangelical Protestant Baptist 2 --- ---
Protestant Reformed Churches in America Evangelical Protestant Presbyterian-Reformed 2 564 0.1
Reformed Baptist Churches Evangelical Protestant Baptist --- --- ---
Reformed Presbyterian Church of North America Evangelical Protestant Presbyterian-Reformed --- --- ---
Salvation Army Evangelical Protestant Holiness 19 6,128 1.1
Seventh-day Adventist Church Evangelical Protestant Adventist 58 15,521 2.9
Southern Baptist Convention Evangelical Protestant Baptist 150 63,084 11.7
Southwide Baptist Fellowship Evangelical Protestant Baptist 1 --- ---
U.S. Mennonite Brethren Evangelical Protestant European Free-Church 1 14 0.0
United Pentecostal Church International Evangelical Protestant Pentecostal --- --- ---
United Pentecostal Council of the Assemblies of God Evangelical Protestant Pentecostal --- --- ---
United Reformed Churches in North America Evangelical Protestant Presbyterian-Reformed 3 775 0.1
Vineyard USA Evangelical Protestant Pentecostal 6 1,434 0.3
Wesleyan Church, The Evangelical Protestant Holiness 4 948 0.2
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran 5 1,826 0.3
Alliance of Baptists Mainline Protestant Baptist --- --- ---
American Baptist Churches in the USA Mainline Protestant Baptist 57 21,825 4.1
Christian Church (Disciples of Christ) Mainline Protestant Restoration Movement 15 3,146 0.6
Congregational Christian Churches, Additional (not part of any national CCC body) Mainline Protestant Presbyterian-Reformed --- --- ---
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 74 22,255 4.1
Evangelical Lutheran Church in America Mainline Protestant Lutheran 160 63,421 11.8
Friends (Quakers) Mainline Protestant European Free-Church 7 602 0.1
Friends General Conference and Friends United Meeting, dually aligned meetings* Mainline Protestant European Free-Church --- --- ---
Friends General Conference* Mainline Protestant European Free-Church --- --- ---
Friends United Meeting* Mainline Protestant European Free-Church --- --- ---
Hungarian Reformed Churches (Additional) Mainline Protestant Presbyterian-Reformed --- --- ---
International Council of Community Churches Mainline Protestant Presbyterian-Reformed 16 8,196 1.5
Metropolitan Community Churches, Universal Fellowship of Mainline Protestant Other Groups 3 174 0.0
National Association of Congregational Christian Churches Mainline Protestant Presbyterian-Reformed 6 1,044 0.2
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 101 36,966 6.9
Reformed Church in America Mainline Protestant Presbyterian-Reformed 22 8,818 1.6
Unaffiliated Friends Meetings* Mainline Protestant European Free-Church --- --- ---
United Church of Christ Mainline Protestant Presbyterian-Reformed 110 52,747 9.8
United Methodist Church, The Mainline Protestant Methodist/Pietist 144 42,712 7.9
Albanian Orthodox Diocese of America Orthodox Eastern Liturgical (Orthodox) 1 270 0.1
American Carpatho-Russian Orthodox Diocese Orthodox Eastern Liturgical (Orthodox) 1 207 0.0
Antiochian Orthodox Christian Archdiocese of North America, The Orthodox Eastern Liturgical (Orthodox) 2 1,428 0.3
Apostolic Catholic Assyrian Church of the East, North American Dioceses Orthodox Eastern Liturgical (Orthodox) 3 19,650 3.7
Armenian Apostolic Church of America (Catholicosate of Cilicia) Orthodox Eastern Liturgical (Orthodox) 1 980 0.2
Armenian Church of North America (Catholicosate of Etchmiadzin) Orthodox Eastern Liturgical (Orthodox) 3 3,688 0.7
Bulgarian Eastern Orthodox Diocese of the USA, Canada and Australia Orthodox Eastern Liturgical (Orthodox) 1 900 0.2
Coptic Orthodox Church Orthodox Eastern Liturgical (Orthodox) --- --- ---
Eritrean Orthodox Orthodox Eastern Liturgical (Orthodox) --- --- ---
Ethiopian Orthodox Orthodox Eastern Liturgical (Orthodox) --- --- ---
Georgian Orthodox Parishes in the United States Orthodox Eastern Liturgical (Orthodox) --- --- ---
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) 19 29,049 5.4
Macedonian Orthodox Church: American Diocese Orthodox Eastern Liturgical (Orthodox) 1 800 0.1
Malankara Archdiocese of the Syrian Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) 2 300 0.1
Malankara Orthodox Syrian Church Orthodox Eastern Liturgical (Orthodox) 3 1,000 0.2
Orthodox Church in America Orthodox Eastern Liturgical (Orthodox) 6 2,244 0.4
Orthodox Church in America: Bulgarian Diocese Orthodox Eastern Liturgical (Orthodox) 1 1,830 0.3
Orthodox Church in America: Romanian Orthodox Episcopate of America Orthodox Eastern Liturgical (Orthodox) 2 3,000 0.6
Romanian Orthodox Archdiocese in Americas Orthodox Eastern Liturgical (Orthodox) 1 525 0.1
Russian Orthodox Church Outside of Russia Orthodox Eastern Liturgical (Orthodox) 1 --- ---
Serbian Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) 2 7,500 1.4
Serbian Orthodox Church in the USA (New Gracanica Metropolitanate) Orthodox Eastern Liturgical (Orthodox) 4 --- ---
Syriac Orthodox Church of Antioch Orthodox Eastern Liturgical (Orthodox) --- --- ---
Ukrainian Orthodox Church of the USA Orthodox Eastern Liturgical (Orthodox) 3 1,356 0.3
Bahá'í Other Other Groups 20 2,505 0.5
Buddhists Other Other Groups 47 --- ---
Church of Christ, Scientist Other Christian Science --- --- ---
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 22 8,862 1.6
Community of Christ Other Latter-day Saints 3 329 0.1
Conservative Judaism Other Judaism --- --- ---
Hindus Other Other Groups 13 --- ---
Jain Other Other Groups 1 --- ---
Jehovah's Witnesses Other Adventist --- --- ---
Jewish Other Judaism 117 234,400 43.6
Muslim Estimate Other Other Groups 46 95,623 17.8
National Spiritualist Association of Churches Other Spiritualist --- --- ---
New Apostolic Church of North America, National Organization of the Other Other Groups --- --- ---
Orthodox Judaism Other Judaism --- --- ---
Reconstructionist Judaism Other Judaism --- --- ---
Reform Judaism Other Judaism --- --- ---
Sikh Other Other Groups 2 --- ---
Swedenborgian Church Other Spiritualist --- --- ---
Union of Messianic Jewish Congregations Other Judaism --- --- ---
Unitarian Universalist Association of Congregations Other Liberal 12 2,671 0.5
Unity Churches, Association of Other Other Groups --- --- ---
Zoroastrian Other Other Groups --- --- ---
Totals: 2,346 3,098,473  

The population of Cook County, Illinois was 5,376,741 in 2000; in 1990 it was 5,105,067. The total population changed 5.3%. The adherent totals of the religious groups listed above (3,098,473) included 57.6% 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 www.usreligioncensus.org for those who are interested in these trends.

Source

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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