County Membership Report
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Cook County, Illinois

Denominational Groups, 2000

270,818 261,906 74,202 2,146,961 344,061 2,278,793
Evangelical Protestant Mainline Protestant Orthodox Catholic Other Unclaimed

Congregational "adherents" include all full members, their children, and others who regularly attend services. The historically African American denominations are not included in the 2000 congregation and membership totals. Many are also missing in 1990 and most historically African American denominations are missing in the 1980 reports.
[More information on the data sources]

Reports


Religious Bodies Theology Congregations Adherents Adherence Rate
Catholic Church Catholic 431 2,303,743 438.5
Evangelical Lutheran Church in America Mainline Protestant 187 103,055 19.6
Lutheran Church--Missouri Synod Evangelical Protestant 145 101,364 19.3
United Methodist Church, The Mainline Protestant 154 71,048 13.5
United Church of Christ Mainline Protestant 119 57,214 10.9
Presbyterian Church (U.S.A.) Mainline Protestant 113 51,737 9.9
Jewish Estimate Other Theology 44 37,423 7.1
Episcopal Church Mainline Protestant 80 31,430 6.0
American Baptist Churches in the USA Mainline Protestant 59 22,812 4.3
Southern Baptist Convention Evangelical Protestant 72 21,081 4.0
African Methodist Episcopal Zion Church Evangelical Protestant 8 16,090 3.1
Christian Reformed Church in North America Evangelical Protestant 33 12,795 2.4
Reformed Church in America Mainline Protestant 24 11,600 2.2
Seventh-day Adventist Church Evangelical Protestant 36 9,833 1.9
Baptist General Conference Evangelical Protestant 34 8,104 1.5
Assemblies of God Evangelical Protestant 48 7,891 1.5
Church of God (Anderson, Indiana) Evangelical Protestant 18 7,503 1.4
Evangelical Covenant Church, The Evangelical Protestant 31 6,927 1.3
Church of Jesus Christ of Latter-day Saints, The Other Theology 15 6,464 1.2
Churches of Christ Evangelical Protestant 47 5,829 1.1
Christian Church (Disciples of Christ) Mainline Protestant 21 5,491 1.1
Conservative Baptist Association of America Evangelical Protestant 19 5,113 1.0
Church of the Nazarene Evangelical Protestant 23 4,918 0.9
Unitarian Universalist Association of Congregations Other Theology 14 4,581 0.9
Salvation Army, The Evangelical Protestant 14 4,394 0.8
Christian Churches and Churches of Christ Evangelical Protestant 22 3,671 0.7
Church of God (Cleveland, Tennessee) Evangelical Protestant 41 3,613 0.7
Evangelical Free Church of America, The Evangelical Protestant 23 3,289 0.6
Christian Brethren Evangelical Protestant 24 2,400 0.5
Wisconsin Evangelical Lutheran Synod Evangelical Protestant 6 2,336 0.4
Christian and Missionary Alliance, The Evangelical Protestant 12 1,223 0.2
Latvian Evangelical Lutheran Church in America Mainline Protestant 2 981 0.2
North American Baptist Conference Evangelical Protestant 7 883 0.2
Free Methodist Church of North America Evangelical Protestant 4 846 0.2
Syrian Orthodox Church of Antioch Orthodox 2 845 0.2
Universal Fellowship of Metropolitan Community Churches Mainline Protestant 2 800 0.2
National Association of Congregational Christian Churches Mainline Protestant 4 676 0.1
International Church of the Foursquare Gospel Evangelical Protestant 2 701 0.1
Open Bible Standard Churches, Inc. Evangelical Protestant 3 535 0.1
Friends (Quakers) Mainline Protestant 5 455 0.1
Armenian Apostolic Church / Catholicossate of Cilicia Orthodox 1 437 0.1
Estonian Evangelical Lutheran Church Mainline Protestant 2 428 0.1
Protestant Reformed Churches in America Evangelical Protestant 1 435 0.1
Reformed Episcopal Church Evangelical Protestant 1 357 0.1
Church of the Brethren Evangelical Protestant 3 316 0.1
Ukrainian Orthodox Church of the USA Orthodox 1 340 0.1
Advent Christian Church Evangelical Protestant 2 270 0.1
Missionary Church, The Evangelical Protestant 3 271 0.1
Evangelical Lutheran Synod Evangelical Protestant 2 151 0.0
Evangelical Congregational Church, The Evangelical Protestant 3 152 0.0
Church of God (Seventh Day) Evangelical Protestant 1 37 0.0
International Pentecostal Holiness Church Evangelical Protestant 2 65 0.0
Evangelical Mennonite Church Evangelical Protestant 1 76 0.0
Orthodox Presbyterian Church, The Evangelical Protestant 1 45 0.0
Baptist Missionary Association of America Evangelical Protestant 2 53 0.0
Mennonite Brethren Churches, U.S. Conference of Evangelical Protestant 1 49 0.0
Cumberland Presbyterian Church Evangelical Protestant 1 7 0.0
Totals (Unadjusted)*: 1,976 2,945,183  

The population of this county (or equivalent) in 1980 was 5,253,655. The adherent totals of the religious groups listed above (2,945,183) include 56.1% of the total population in 1980.

Source

The 1980 data were collected by the Glenmary Research Center and includes statistics for 111 Judeo-Christian church bodies, including number of churches and adherents. These data originally appeared in Churches and Church Membership in the United States, 1980, published by the Glenmary Research Center.

The adherence rate provides the number of adherents of a particular group per 1,000 population. For example, in 2000 the Episcopal Church had an adherence rate of approximately 8 (8.1) in Autauga County, Alabama. This means that 8 out of every 1,000 people in Autauga County are Episcopalian.