For the purposes of this chapter, the incorporated territory of the city is divided into the following categories of zoning districts:
(A) A Agricultural district
(B) R-1 Low-density, single-family dwelling residential district
(C) R-2 Medium-density, single-family dwelling residential district
(D) R-3 Medium-density, single- and multi-family dwelling residential district
(E) R-4 High-density, multi-family residential district
(F) B-1 Central business district
(G) B-2 Commercial district
(H) O-1 Office and professional district
(I) I Industrial district
(Ord. 88-12 Art. 2 (2.01), 1988)