Off-campus nonstudent (6)
I believe the answer is:
townie
'off-campus nonstudent' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for townie that I've seen before include "citizen" , "city type" , "knows little of the country?" , "Inhabitant of an urban area" , "No countryman" .)