With a post like this, explaining the methodology is key:
All of the data comes from comparing the data of the Census Bureau’s Population Estimates Program, comparing numbers from 2010 to 2018 against each other. You get a number called “Net migration,” which measures how many people move to a city minus how many people left. Compare that to the current population estimate, and you get a percentage that shows how much a city has grown.
Got all of that? Cool. Now, get ready to move to the south, because apparently that’s where everyone is heading (specifically, Florida?).