I didn't find a Gene or Eugene Loftus in the 1930 Census in Randolph Co. IL.
I'd look for City/County Directories for Sparta, Randolph County 1929-1934. Do a Google search for them. Sometimes they will be free.
If not, then I'd contact the Randolph County Genealogical Society, www.facebook.com/
and ask if they have City/County Directories and will they do a lookup for him. Successful Searching!