A zoning ordinance divides a city or town into zoning use districts, which may include overlay districts and floating zone districts, of the number, kind, type, shape, and area suitable to carry out the purposes of this chapter. Regulations and standards shall be consistent for each land use, type of development, or type of building or structure within a district, but may differ from those in other districts. Zoning use districts shall be depicted by type and location on the zoning map.
R.I. Gen. Laws § 45-24-36