I assume this is Magnolia grandiflora, which is native to an east-west strip south of here, from east Texas east into northern Florida, and just barely into North Carolina. Truth be told, it is tolerant of slightly cooler climes, like here in ATL.
OTOH, it may be Magnolia virginiana, which is native to a similar strip that extends a bit more to the north, plus northeast into New Jersey. Of all things.
However, thinking about the leaves, I lean toward M. grandiflora.