236 faith groups have been included in the 2010 U.S. Religion Census. Maps based upon this data are available for download.

NOTE: 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 Amish groups, the Catholic Church, 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. Indeed, data for these groups are now more comparable to that of other bodies than in previous decadal reports. But caution should be used when downloading comparison maps. .

If any of the map data seems inaccurate, please call this to our attention.

Lists of largest counties by religious body are also available: Largest number of adherents, Largest ratio of adherents, Largest number of congregations, and Largest population penetration