For the purposes of this chapter, the City is hereby divided into six zoning districts to be known as follows:

   A-1   Agricultural District

   R-1   Low Density Residence District

   R-2   Low Density Residence and Professional Office District

   R-3   Medium Density Residence District

   C-1   Commercial District

   I-1   Industrial District

The boundaries of these districts are shown on the Zoning Map of the City, which map is by this reference hereby incorporated herein as a part of this chapter. The Zoning Map is on file in the office of the Clerk. All boundaries of districts are, unless otherwise noted on the Zoning Map, intended to follow street lines, alley lines, lot lines or corporate limit lines, but where a district lines does not clearly coincide with such lines it shall be determined by scaling. Questions concerning the exact location of district boundary lines shall be determined by the Board of Adjustment. All territory which may hereafter be annexed to the City shall be zoned by the City as lying and being in the district most appropriate in accordance with the intent and provisions of the Comprehensive Plan. Such zoning shall occur within a reasonable time after the annexation of such territory.