The Map Gallery of Religion in the United States has maps showing the distribution of various religious groups in the United States. To view any of these maps in more detail, you can right click on the image, then select “view image.”
Leading Church Bodies — this map shows the group that has the largest number of adherents county by county. In the red counties, the Baptists are most numerous; light blue is for Catholics, orange is for Lutherans, green is for Methodists, and brown is for Mormons.
Baptists — dominant in the south:
Lutherans — dominant in the upper midwest:
Catholics — along the Mexican border; also strong in the northern states:
Other maps at the site show the distribution of Methodists, Mormons, Mennonites, Jews, Moslems, Episcopalians, Presbyterians, and other groups.
Grace and Peace