Residential districts include the following:

   (A)   “SA” Suburban Agricultural District;

   (B)   “R-1” Single-Family Residential District;

   (C)   “R-2” Two-Family Residential District;

   (D)   “R-3” Multiple-Family Residential District;

   (E)   “R-MH” Mobile Home Park Residence District; and

   (F)   “PR” Planned Residence Overlay District.