This map is the Largest participating Religious group. Another great map to get a better understanding of the different religions around the U.S. As you can see the Catholic church is very wide spread.
Vintage Indiana postcard with state map, Greetings from Indiana, The Hoosier State
This map shows the Appalachian Region divided into five subregions: northern, north central, central, south central, and southern Appalachia. For a list of county data by state, see the downloadable Excel file.