The US Census Bureau just released its population estimates for 2018. As has been the case in previous years, the counties that added the most people (largest numeric growth) are all located in the south and west. Texas holds 4 out of the top 10 spots.
Here is a Tweetstorm by Jed Kolko, the chief economist of Indeed, with a couple of graphs summarizing the findings (click through to see the full thread):
https://twitter.com/JedKolko/status/1118854499810996224
Despite the narrative that people are returning to cities and urban centers, the data is pretty clear: the flow of domestic migration within the US is largely from dense urban counties to more suburban -- and affordable -- ones. Big cities are expensive.

Last week the US Census Bureau released its 2017 population estimates for the largest cities in the country. All of the figures are for the city itself and not the broader MSA or some other boundary.
Here are the top 15 cities with the largest numeric increases between July 1, 2016 and July 1, 2017:

However, if we switch over to percentage increases, Frisco, Texas – which is part of the Dallas-Fort Worth metro area – jumps up to number one with an increase of 8.2%.
In fact, the top 3 cities (on percentage basis) are in Texas and 10 of the top 15 cities are located in the South. That shouldn’t come as a surprise to many of you. Related post: Follow the sun and sprawl.
However, if we only consider the 25 largest cities in the US, the fastest growing city on a percentage basis was Seattle at 2.47%. Number two was Fort Worth at 2.18%. And number three was Charlotte at 1.84%.
New York City sits at 0.08%. And Detroit lost people. But it’s not a horrible figure (-0.35%). For more tables and data, click here.