The Bible Belt Concept Is Not A Myth

In this case, the image largely speaks for itself. 

It is also worth noting that the sects within Christianity present in the "Bible Belt" are significantly different, with more Evangelicals, and fewer Mainline Protestants and Catholics and Jews than elsewhere.

But this is changing over time somewhat.

In 2006, 23 percent of Americans were white evangelical Protestants, according to the Public Religion Research Institute. By 2020, that share was down to 14.5 percent. 

In 2020, 22 percent of Americans 65 and older were white evangelical Protestants. Among adults 18 to 29, only 7 percent were.