Demographic Maps of the USA by Religious Affiliation

A couple of years ago, LeFalcon sent me a link to a set of maps like these, which codify the counties of the USA by the percentage of the population who adhere to particular religious groups.  It’s fascinated me ever since.  Below, as an example, is the map for Quakers.     

quaker

You can see that Quakers are rather thin on the ground everywhere.  In their uniformity, they are unusual.  The striking thing about the maps is how divided the USA is regionally.  So, look at the distribution of Baptists:

baptist

And compare it with the distribution of Roman Catholics:

 

catholic1

The overall map shows just how strong these regional divisions are.

2008 Presidential Election Results

The usual news report about the results of a presidential election will include a map that looks like this:

statemapredbluer512

A familiar image, but one which does not tell us who won the election.  Change the size of the states in proportion to their population, and you produce a less familiar, but more useful image:

statepopredblue512-cartogram

Maps like this are called cartogramsThis guy can help you make your own cartograms, if you are so inclined.