The best part is at the bottom where you can click on “Where people are moving from” and “Where people are moving to”. People are moving here from the other top tier cities in America. The folks that couldn’t cut it here are moving to second, third and fourth tier cities in the South and Northwest.
Sadly this data isnt available for Saint George. But if you check Salt Lake, Ogden and Vegas one of the top destinations is SG. Your population growth is really coming from those places not here