WordNet (r) 3.0 (2006):

suburbanite
    n 1: a resident of a suburb

Moby Thesaurus II by Grady Ward, 1.0:

19 Moby Thesaurus words for "suburbanite":
   big-city man, bourgeois, burgess, burgher, city dweller, city man,
   city slicker, exurbanite, oppidan, townee, towner, townfolk,
   townfolks, townsman, townspeople, townswoman, urbanite, villager,
   villageress