There have been some interesting maps circulating on the internet recently.
Here is one:
Gizmodo: The Most Common Languages Spoken in the U.S. After English and Spanish
and here is another:
Washington Post: The second-largest religion in each state (and county)
In the first link I was surprised at the appearance of Hmong, Vietnamese and Navajo on the map. While on the second I was surprised by the number of states where the second largest religion was either Islam or Buddhism (I suppose I just expected Jews to appear as the number two religion in more states... I mean, even in Florida, the second largest religion was Islam) I was also surprised that the Bahai Faith was actually the second largest religion in any of the states (they got South Carolina).