For the purpose of promoting the public health, safety, morals, and general welfare, the village and that portion of the contiguous unincorporated area within one and one-half miles of the village limits, which portion is not zoned by any county authority, is hereby divided into the following types of districts:
(A) A - Agricultural District;
(B) C - Commercial District;
(C) I - Industrial District; and
(D) R - Residential District.
(1977 Code, § 5-2-1)