For the purpose of this Zoning Code, the districts are hereby established within the City, as shown on the Official Zoning Map, which, together with all explanatory matter thereon, is hereby adopted by reference and declared to be a part of this Code of Ordinances.

A-1   Agricultural District

R-1   Single Family Detached Residential District

R-1A   Single Family Residential District

R-2   One and Two-Family Residential District

R-2A   Townhome Residential District

R-3   Multiple-Family Residential District

R-4   Mobile Home Park Residential District

C-TS   Town Square Business District

C-1   Central Business District

C-2   Commercial District

C-3   Office Park Commercial District

C-4   Neighborhood Friendly Commercial District

M-1   Light Industrial District

M-2   Heavy Industrial District

GF-1   Government Facilities District

PUD   Planned Unit Development District

FP   Floodplain Overlay District

   The Official Zoning Map shall be identified by the signature of the Mayor, attested by the City Clerk, under the following words: “This is to certify that this is the Official Zoning Map referred to in the Zoning Code of the City of Polk City, Iowa, adopted on this _____ day of ____________, _____.” If, in accordance with the provisions of this chapter, changes are made in district boundaries or other matter portrayed on the Official Zoning Map, copies of such changes shall be filed with the Official Zoning Map promptly after the amendment has been approved by the Council. † 9 Regardless of the existence of purported copies of the Official Zoning Map which may from time to time be made, the Official Zoning Map referred to herein shall be the final authority as to the current zoning status of land and water areas, buildings and other structures in the City. Where there is uncertainty as to the boundaries of districts as shown on the Official Zoning Map, the Board of Adjustment shall interpret the district boundaries. In the event that the Official Zoning Map becomes damaged, destroyed, lost or difficult to interpret because of use, the Council may by ordinance adopt a new Official Zoning Map which shall supersede the prior Official Zoning Map. The new Official Zoning Map may correct drafting or other errors or omissions in the prior Official Zoning Map, but no such correction shall have the effect of amending the original Zoning Code or any subsequent amendment thereto. The new Official Zoning Map shall be identified by the signature of the Mayor, attested by the City Clerk, under the following words: “This is to certify that this Official Zoning Map supersedes and replaces the Official Zoning Map adopted on the ____ day of ___________, ______, as part of the City’s Zoning Code.”