Each year, roughly 40 million Americans, or about 14% of the U.S. population, move at least once. Much of that movement includes younger people relocating within cities, but it is trends of Americans moving to warmer climates, more affordable areas, and better job opportunities that have largely determined migration patterns in recent decades.
Because of those long-term patterns, as well as the recent period of economic recovery, cities in some parts of the country have lost tens of thousands of residents.
Michigan cities highlighted include Detroit-Warren-Dearborn (3), Flint (8), Saginaw (29).
For the full article, see Michael B. Slaughter, "Population migration patterns: US cities Americans are abandoning", Detroit Free Press, July 5, 2018.