Young adults in the United States often do not live far from home:

In fact, analysis by the Census Bureau and Harvard University earlier this year found that 80% of young adults now live less than 100 miles from where they grew up.
This statistic could be parsed a few different ways. This includes
-This percentage would include the significant numbers that are living at home with family.
-One hundred miles is not a small distance. This would cover almost all of the largest metropolitan regions. This probably puts people within a two hour distance of home. It does mean that someone could live in a very different setting and still be close to home.
-What does this number mean in the long run? How does it compare to other years and eras? If Americans move less frequently, does that mean they also do not move as far? There is a narrative in the United States that people strike out on their own for new, usually economic, opportunities. Does this data fit that?