The South accounted for 51 percent of the population jump between 2010 and 2013 in the 52 U.S. metro areas with a population of 1 million or more, New Geography reported.
By comparison, the West accounted for 30 percent of the increase, followed by the Northeast at 11 percent and 8 percent in the Midwest.
In terms of net domestic migration between the four regions, nearly 785,000 more people moved to Southern major metro areas from other parts of the country than left. Meanwhile, the West had 170,000 net domestic migrants, while the Northeast lost 485,000 net domestic migrants and the Midwest lost 280,000.
The South even led in net international migration with 666,000 such migrants (a 1.2 percent rate over three years).