Just to be nerdy
Why do people say out west and back east?
Why do we say 'Back East' and 'Out West'?
Because, historically, during the late 18th and 19th centuries, most English-speaking Americans started out in the East, and went West. If a man was standing in
St. Louis, he would not say “back West,” because he hadn't been there yet.
Quora - https://www.quora.com › Why-do-many-Americans-still-..
and....
The usual pattern from the colonial era through to the mid-20th century was for people in the eastern part of the country to move west; the
mean center of population of the United States has moved west with every single decennial census, so it is natural that
moving back east and
moving out west would be more common patterns than
moving back west or
moving out east, as you can see in this NGram of AmE from the closing of the frontier to the present:
BTW - St. Louis is also
2,342 miles "down river" from the source of the Missouri River in my state.