The boundaries of the zoning districts are established on a map entitled “Zone District Map, City of Vienna, Illinois” which accompanies and is a part of this chapter. District boundary lines follow lot lines, centerlines of streets and alleys, railroad rights-of-way, or other similar natural features. Questions concerning the exact location of district boundaries shall be determined by the Zoning Board of Appeals. In accordance with state law, if any changes are made in the zoning districts or regulations during a calendar year, the city shall publish the revised official zoning map no later than March 31 of the following year.
(1975 Code, § 32-III-2)