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St. Tammany Parish (Louisiana)

Religious Traditions, 2010

42,583 2,762 16,798 53,149 2,430 116,018
Evangelical Protestant Black Protestant Mainline Protestant 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]


Religious Bodies Tradition Family Congregations Adherents Adherence Rate
American Baptist Association, The Evangelical Protestant Baptist 4 1,339 7.00
Assemblies of God Evangelical Protestant Pentecostal 7 2,474 12.93
Bahá'í Other Other Groups 2 72 0.38
Baptist Missionary Association of America Evangelical Protestant Baptist 2 341 1.78
Catholic Church Catholic Catholicism 15 57,336 299.77
Christian Church (Disciples of Christ) Mainline Protestant Baptist 2 396 2.07
Christian Churches and Churches of Christ Evangelical Protestant Baptist 2 96 0.50
Church of God (Anderson, Indiana) Evangelical Protestant Holiness 2 129 0.67
Church of God (Cleveland, Tennessee) Evangelical Protestant Pentecostal 6 1,277 6.68
Church of God of Prophecy Evangelical Protestant Pentecostal 3 105 0.55
Church of Jesus Christ of Latter-day Saints, The Other Latter-day Saints 2 1,000 5.23
Church of the Nazarene Evangelical Protestant Holiness 2 349 1.82
Churches of Christ Evangelical Protestant Baptist 3 660 3.45
Episcopal Church Mainline Protestant Episcopalianism/Anglicanism 3 2,296 12.00
Evangelical Free Church of America, The Evangelical Protestant Methodist/Pietist 1 250 1.31
Evangelical Lutheran Church in America Mainline Protestant Lutheran 2 656 3.43
Evangelical Presbyterian Church Evangelical Protestant Presbyterian-Reformed 1 77 0.40
Interstate & Foreign Landmark Missionary Baptists Association Evangelical Protestant Baptist 7 687 3.59
Jewish Other Judaism 1 1,400 7.32
Lutheran Church--Missouri Synod Evangelical Protestant Lutheran 4 2,365 12.36
Muslim Estimate Other Other Groups 1 841 4.40
Presbyterian Church (U.S.A.) Mainline Protestant Presbyterian-Reformed 5 1,154 6.03
Presbyterian Church in America Evangelical Protestant Presbyterian-Reformed 2 116 0.61
Seventh-day Adventist Church Evangelical Protestant Adventist 4 386 2.02
Southern Baptist Convention Evangelical Protestant Baptist 33 22,016 115.11
Unitarian Universalist Association of Congregations Other Liberal 1 118 0.62
United Methodist Church, The Mainline Protestant Methodist/Pietist 13 9,478 49.55
Vineyard USA Evangelical Protestant Pentecostal 2 243 1.27
Wisconsin Evangelical Lutheran Synod Evangelical Protestant Lutheran 1 137 0.72
Totals: 133 107,794  

The population of St. Tammany Parish, Louisiana was 191,268 in 2000; in 1990 it was 144,508. The total population changed 32.4%. The adherent totals of the religious groups listed above (107,794) included 56.4% 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 for those who are interested in these trends.


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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