The Collaborative International Dictionary of English v.0.48:

Suburban \Sub*ur"ban\, n.
   One who dwells in the suburbs.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Suburban \Sub*ur"ban\, a. [L. suburbanus.]
   Of or pertaining to suburbs; inhabiting, or being in, the
   suburbs of a city. "Suburban taverns." --Longfellow.
   [1913 Webster]

         Suburban villas, highway-side retreats, . . .
         Delight the citizen.                     --Cowper.
   [1913 Webster]

WordNet (r) 3.0 (2006):

suburban
    adj 1: relating to or characteristic of or situated in suburbs;
           "suburban population"

Moby Thesaurus II by Grady Ward, 1.0:

54 Moby Thesaurus words for "suburban":
   ambient, average, bourgeois, burghal, circling, circumambient,
   circumferential, circumflex, circumfluent, circumfluous,
   circumjacent, citified, city, civic, common, commonplace,
   conventional, downtown, embracing, encircling, enclosing,
   encompassing, enfolding, enveloping, environing, garden,
   garden-variety, interurban, metropolitan, middle-class, midtown,
   municipal, neighboring, no great shakes, normal, oppidan, ordinary,
   peripheral, plastic, regular, roundabout, run-of-mine,
   run-of-the-mill, surrounding, town, unexceptional, unnoteworthy,
   unremarkable, unspectacular, uptown, urban, usual, village,
   wrapping