To stretch out one’s retirement savings, one may have to eventually move to a lower cost city. Many people from the northeast United States end up moving to the American South, with one of the major factors being warmer weather. But that’s hardly the only factor. States like North and South Carolina tend to have costs of living far beneath what one contends with in Connecticut, New York, New Jersey or Maryland. One of the difficulties in understanding differential costs of living in various areas is a dearth of comparable data.