For those who know their history, this is a case of "back to the future"--since the South was orignally a Catholic stronghold under the Spanish and French.
From The Daily Dispatch:
For every Boston, there is a Knoxville, Tenn. For every Philadelphia, there is a Savannah, Ga.
"The church is closing parishes in the Northeast, but Catholics are building them in the South and the Southwest," said Wagner. "We know that a lot of that is driven by immigration and population trends. ... So if you really want to know where Catholicism is alive and where it's struggling, you can't just look at membership statistics. You have to ask other questions."