Ala. Code § 11-19-17
For the purpose of providing for the division of the territory into districts, consonant with the conditions provided in this section, the county planning commission may make and certify to the county commission a single zoning plan for all the territory of the area which lies within the jurisdiction of the county planning commission or may make and certify separate and successive zoning plans for parts of the flood-prone area for which technical information is available or which for other reasons it deems to have appropriate territorial unity for a zoning plan, and correspondingly any zoning ordinance or resolution enacted by the county commission may cover and include the whole territory lying within its jurisdiction or such territory as the county commission deems to be an appropriate territorial unit for a zoning plan; provided, that no resolution governing more or less than the entire area shall be enacted or put into effect until it is first submitted to the county planning commission for additional review and comment.
Ala. Code § 11-19-17 (1975)