Did you know that Grandma from the Waltons (Ellen Corby) was born in Wisconsin of Norwegian parents and grew up in Pennslyvania? I sure didn't.
Her maiden name was Ellen Hansen and her 1920 census entry is partially shown here with her mother and step-father in Philadelphia.
The 1920 United States Federal Census can be searched for your relative--no matter where in the US they were born or were living. Of course, sometimes we search but never find them.