All areas within the city shall be designated within a zone. The boundaries, designations, map symbols and locations of the zones established by the zoning regulations shall be shown upon the map(s) entitled “City of San Luis Obispo Zoning Map” and referred to in the zoning regulations as the zoning map. The official zoning map, which shall depict all duly adopted zones, is as much a part of these regulations as if it were fully contained in this document. The official zoning map shall be maintained by and in the community development department, and for convenience in more easily identifying zone boundaries may be divided into parts. (Ord. 1650 § 3 (Exh. B), 2018)