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