The house in St. Paul that I grew up in, and that my parents still live in, was built in 1923. Using ancestry.com, my dad dug up the census entry that shows the people living in that house (and some of the nearby houses on our street) as of April 5, 1930.

Apparently a Czechoslovakian immigrant named Phillip Hadd and his wife, Mary, lived there with their three daughters. It is likely that these were the original occupants of the house. It looks like the neighborhood was a real melting pot of recent immigrant families. In the ten houses listed on that page of the census, the listed locations for parents birthplace include Czechoslovakia, Ireland, Germany, Bohemia, Sweden, Norway, Denmark, and Austria, as well as six US states.

I can't think of a single family in the neighborhood when I was living there (mid 1980's - 1994) that I considered to be new to the country.