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Cook County (Illinois)

Religious Traditions, 2010

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

Reports


Religious Bodies Tradition Family Congregations Adherents Adherence Rate
Albanian Orthodox Diocese of America Orthodox Eastern Liturgical (Orthodox) 1 270 0.05
American Baptist Association, The Evangelical Protestant Baptist 1 63 0.01
American Baptist Churches in the USA Mainline Protestant Baptist 57 21,825 4.06
American Carpatho-Russian Orthodox Diocese Orthodox Eastern Liturgical (Orthodox) 1 207 0.04
Antiochian Orthodox Christian Archdiocese of North America, The Orthodox Eastern Liturgical (Orthodox) 2 1,428 0.27
Apostolic Catholic Assyrian Church of the East, North American Dioceses Orthodox Eastern Liturgical (Orthodox) 3 19,650 3.65
Apostolic Christian Church of America, Inc. Evangelical Protestant European Free-Church 1 175 0.03
Armenian Apostolic Church of America (Catholicosate of Cilicia) Orthodox Eastern Liturgical (Orthodox) 1 980 0.18
Armenian Church of North America (Catholicosate of Etchmiadzin) Orthodox Eastern Liturgical (Orthodox) 3 3,688 0.69
Assemblies of God Evangelical Protestant Pentecostal 66 14,013 2.61
Association of Free Lutheran Congregations Evangelical Protestant Lutheran 1 55 0.01
Bahá'í Other Other Groups 20 2,505 0.47
Baptist Missionary Association of America Evangelical Protestant Baptist 2 84 0.02
Buddhists Other Other Groups 47 --- ---
Bulgarian Eastern Orthodox Diocese of the USA, Canada and Australia Orthodox Eastern Liturgical (Orthodox) 1 900 0.17
Calvary Chapel Fellowship Churches Evangelical Protestant Pentecostal 3 --- ---
Catholic Church Catholic Catholicism 370 2,146,961 399.31
Christian and Missionary Alliance, The Evangelical Protestant Holiness 22 2,884 0.54
Christian Church (Disciples of Christ) Mainline Protestant Baptist 15 3,146 0.59
Christian Churches and Churches of Christ Evangelical Protestant Baptist 21 5,272 0.98
Christian Reformed Church in North America Evangelical Protestant Presbyterian-Reformed 28 12,251 2.28
Church of God (Anderson, Indiana) Evangelical Protestant Holiness 19 3,408 0.63
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 34 4,995 0.93
Church of God of Prophecy Evangelical Protestant Pentecostal 4 212 0.04
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 22 8,862 1.65
Church of the Brethren Evangelical Protestant European Free-Church 5 637 0.12
Church of the Nazarene Evangelical Protestant Holiness 38 3,861 0.72
Churches of Christ Evangelical Protestant Baptist 51 7,614 1.42
Community of Christ Other Latter-day Saints 3 329 0.06
Conservative Baptist Association of America Evangelical Protestant Baptist 16 3,220 0.60
Conservative Congregational Christian Conference Evangelical Protestant Presbyterian-Reformed 1 236 0.04
Converge Worldwide/Baptist General Conference Evangelical Protestant Baptist 43 9,353 1.74
Cumberland Presbyterian Church Evangelical Protestant Presbyterian-Reformed 2 53 0.01
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 74 22,255 4.14
Evangelical Covenant Church, The Evangelical Protestant Methodist/Pietist 38 9,841 1.83
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist 40 8,678 1.61
Evangelical Lutheran Church in America Mainline Protestant Lutheran 160 63,421 11.80
Fellowship of Evangelical Churches Evangelical Protestant European Free-Church 2 52 0.01
Foursquare Gospel, International Church of the Evangelical Protestant Pentecostal 5 1,419 0.26
Free Methodist Church of North America Evangelical Protestant Holiness 4 226 0.04
Friends (Quakers) Mainline Protestant European Free-Church 7 602 0.11
General Association of Regular Baptist Churches Evangelical Protestant Baptist 4 849 0.16
Greek Orthodox Archdiocese of America Orthodox Eastern Liturgical (Orthodox) 19 29,049 5.40
Hindus Other Other Groups 13 --- ---
Independent, Charismatic Churches Evangelical Protestant Pentecostal 7 4,775 0.89
Independent, Non-Charismatic Churches Evangelical Protestant
----
17 8,027 1.49
International Churches of Christ Evangelical Protestant Baptist 1 4,582 0.85
International Council of Community Churches Mainline Protestant Presbyterian-Reformed 16 8,196 1.52
International Pentecostal Holiness Church Evangelical Protestant Pentecostal 2 86 0.02
Jain Other Other Groups 1 --- ---
Jewish Other Judaism 117 234,400 43.60
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 135 63,814 11.87
Macedonian Orthodox Church: American Diocese Orthodox Eastern Liturgical (Orthodox) 1 800 0.15
Malankara Archdiocese of the Syrian Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) 2 300 0.06
Malankara Orthodox Syrian Church Orthodox Eastern Liturgical (Orthodox) 3 1,000 0.19
Mennonite Church USA Evangelical Protestant European Free-Church 17 2,974 0.55
Metropolitan Community Churches, Universal Fellowship of Mainline Protestant Other Groups 3 174 0.03
Missionary Church, The Evangelical Protestant Holiness 1 297 0.06
Muslim Estimate Other Other Groups 46 95,623 17.78
National Association of Congregational Christian Churches Mainline Protestant Presbyterian-Reformed 6 1,044 0.19
National Association of Free Will Baptists Evangelical Protestant Baptist 2 216 0.04
National Primitive Baptist Convention, USA Evangelical Protestant Baptist 5 669 0.12
Netherlands Reformed Congregations Evangelical Protestant Presbyterian-Reformed 1 31 0.01
New Testament Association of Independent Baptist Churches and other Fundamental Bapti Evangelical Protestant Baptist 9 2,543 0.47
North American Baptist Conference Evangelical Protestant Baptist 5 873 0.16
Orthodox Church in America Orthodox Eastern Liturgical (Orthodox) 6 2,244 0.42
Orthodox Church in America: Bulgarian Diocese Orthodox Eastern Liturgical (Orthodox) 1 1,830 0.34
Orthodox Church in America: Romanian Orthodox Episcopate of America Orthodox Eastern Liturgical (Orthodox) 2 3,000 0.56
Orthodox Presbyterian Church, The Evangelical Protestant Presbyterian-Reformed 3 374 0.07
Pentecostal Church of God Evangelical Protestant Pentecostal 1 80 0.01
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 101 36,966 6.88
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed 13 1,403 0.26
Primitive Baptist Church, The Evangelical Protestant Baptist 2 --- ---
Protestant Reformed Churches in America Evangelical Protestant Presbyterian-Reformed 2 564 0.10
Reformed Church in America Mainline Protestant Presbyterian-Reformed 22 8,818 1.64
Romanian Orthodox Archdiocese in Americas Orthodox Eastern Liturgical (Orthodox) 1 525 0.10
Russian Orthodox Church Outside of Russia Orthodox Eastern Liturgical (Orthodox) 1 --- ---
Salvation Army Evangelical Protestant Holiness 19 6,128 1.14
Serbian Orthodox Church in North America Orthodox Eastern Liturgical (Orthodox) 2 7,500 1.39
Serbian Orthodox Church in the USA (New Gracanica Metropolitanate) Orthodox Eastern Liturgical (Orthodox) 4 --- ---
Seventh-day Adventist Church Evangelical Protestant Adventist 58 15,521 2.89
Sikh Other Other Groups 2 --- ---
Southern Baptist Convention Evangelical Protestant Baptist 150 63,084 11.73
Southwide Baptist Fellowship Evangelical Protestant Baptist 1 --- ---
U.S. Mennonite Brethren Evangelical Protestant European Free-Church 1 14 0.00
Ukrainian Orthodox Church of the USA Orthodox Eastern Liturgical (Orthodox) 3 1,356 0.25
Unitarian Universalist Association of Congregations Other Liberal 12 2,671 0.50
United Church of Christ Mainline Protestant Presbyterian-Reformed 110 52,747 9.81
United Methodist Church, The Mainline Protestant Methodist/Pietist 144 42,712 7.94
United Reformed Churches in North America Evangelical Protestant Presbyterian-Reformed 3 775 0.14
Vineyard USA Evangelical Protestant Pentecostal 6 1,434 0.27
Wesleyan Church, The Evangelical Protestant Holiness 4 948 0.18
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran 5 1,826 0.34
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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