the south is huge for quilting i certainly think more so then the north and especially more than the north east.
paducah is like quilting mecca, Gee's Bend quilts are famous around the world, and the railroad quilts.
i think quilting is more related to finances than location in the country.
quilting was initially done due to lack of funds and the ability to purchase already made blankets.
now quilting is done by people who have the money to support what is an extremely expensive hobby.