Flag map of the United States with a broken appearance, featuring money location pins roughly positioned over San Francisco, New York, and Miami

Housing is a basic need. No matter how expensive it gets, people still need somewhere to live.

Given this truism, it's no wonder that the populations of America's so-called superstar cities have stagnated while the Sun Belt's metropolitan areas have boomed. When a city — or, as in the case of California, an entire state — doesn't have enough homes to go around, priced-out residents are forced to relocate to other parts of the country.