The reason's people are migrating not just tax policy, political ideology etc.
Fastest growing states for 2017 are: ND, DC, TX, WY, UT, NV, CO, AZ, FL and SD.
Yet - but between 2015-16, WY was LOSING population.
What’s Driving Population Declines in More States?
The reasons vary - economic reasons, for example some states seeing a decline were affected by low energy prices, others were dependent on coal and when coal went, no new jobs came in. Some are states with an aging population, others are aging baby boomers seeking warmer climates for retirement.
The States People Are Fleeing
New Jersey, Illinois, New York and Connecticut were the top states where more people are departing than arriving. An aging population is partly driving this trend, according to Michael Stoll, an economist and public policy professor at UCLA who partners with United Van Lines to interpret the migration study.
“Compared to the South and West, the Midwest and Northeast have older populations,” he says. “As baby boomers reach retirement age, they’re thinking about places that have the amenities they’re looking for: warmer, more temperate climates and lower cost of living.”