For the purpose and provisions of this Ordinance, the Village of Itasca is hereby divided into the following districts:

   R-1 Single-Family Residence District

   R-2 Single-Family Residence District

   R-3 General Residence District

   B-1 Local Business District

   B-2 Community Business District

   B-3 Service Business District

   B-4 Traditional Downtown North Business District

   B-5 Traditional Downtown South Business District

   B-6 Irving Park Road Business District

   Office-Research District

   O-R Office-Research District

   ROC Regional Office Center District

   M Limited Manufacturing District