For the purpose of this Zoning Code, the City is divided into districts, of which there shall be fourteen in number:
R-1 Single-Family Residence District
R-2 Single-Family Residence District
R-3 Two-Family Residence District
R-4 Multiple Dwelling District
C-1 General Commercial District
C-2 Central Business District
C-3 Shopping Center District
C-4 Special Commercial District
H-1 Harbor Historical District
M-1 Light Industrial District
M-2 Heavy Industrial District
(2004 Code)