I don’t personally believe the census records, if available, would tell us whether SAD lived with her folks or not. She was a college student and would have used their address as her permanent address. This is another possible reason Obama doesn’t want anyone to see the COLB. Mama may have used Granny’s address as her permanent address and Barak Sr.’s address in Kenya as her home address or vice versa.
I do genealogy and some census will give the names of children and persons in the household. The problem is that census records are only released up to 1930. I think 1940 will be released this year. That is to meant protect people and their privacy.