zonerhttp://www.oed.com/dictionary/zoner_n%3Ftab%3Dmeaning_and_usezoner, n.
First published 1986; not fully revised

zonernoun

  1. 1962–
    One employed in the application of planning restrictions to particular areas.
    Stressed as ˈzoner.
    1. 1962
      Planners and zoners won't apparently make up their minds.
      Punch 6 June 848/2
    2. 1976
      This district contains about 1,000 homes approved by town zoners..after they were assured restrictive deed clauses would make the district a ‘permanent adult community’.
      Daily Telegraph 4 April 3/6

Originally published as part of the entry for zone, v.

zone, v. was first published in 1921; not fully revised.