O'brien County, Iowa

Denominational Groups, 2000

4,591	7,108		1,734	59	1,610
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^†
Assemblies of God	Evangelical Protestant	1	166	10.8
Catholic Church	Catholic	5	1,903	123.2
Christian Churches and Churches of Christ	Evangelical Protestant	3	332	21.5
Christian Reformed Church in North America	Evangelical Protestant	4	1,511	97.8
Churches of God, General Conference	Evangelical Protestant	1	48	3.1
Evangelical Lutheran Church in America	Mainline Protestant	3	1,209	78.3
Friends (Quakers)	Mainline Protestant	1	123	8.0
Lutheran Church--Missouri Synod	Evangelical Protestant	5	2,460	159.3
Presbyterian Church (U.S.A.)	Mainline Protestant	2	567	36.7
Reformed Church in America	Mainline Protestant	5	2,628	170.2
United Church of Christ	Mainline Protestant	3	1,112	72.0
United Methodist Church, The	Mainline Protestant	6	2,322	150.4
	*Totals (Unadjusted)^:**	39	14,381

The population of this county (or equivalent) in 1990 was 15,444. The adherent totals of the religious groups listed above (14,381) include 93.1% of the total population in 1990.

Source

The 1990 data were collected by the Association of Statisticians of American Religious Bodies (ASARB) and include statistics for 132 religious groups, including number of churches and adherents. Martin B. Bradley, Norman M. Green, Jr., Dale E. Jones, Mac Lynn, and Lou McNeil supervised the collection. These data originally appeared in Churches and Church Membership in the United States, 1990, published by the Glenmary Research Center.

[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 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.