(a) (1) (A) The territorial jurisdiction of the governing body of a municipality for the purpose of this subchapter shall not exceed the limits stated under this subsection.

(B) If the territorial limits of two (2) or more municipalities conflict, the limits of their respective territorial jurisdictions shall be a line equidistant between them, or as agreed on by the respective municipalities.

(2) In addition to the powers under this subchapter, cities now having eight thousand (8,000) population or more shall have the authority to administer and enforce planning ordinances outside their corporate limits as follows:

(A) For cities of eight thousand (8,000) to sixty thousand (60,000) population, the jurisdictional area will be one (1) mile beyond the corporate limits;

(B) For cities of sixty thousand (60,000) to one hundred fifty thousand (150,000) population, the jurisdictional area will be two (2) miles beyond the corporate limits; and

(C)

(i) For cities of one hundred fifty thousand (150,000) population and greater, the jurisdictional area will be three (3) miles beyond the corporate limits.

(ii) Upon July 3, 1989, no city with a population in excess of one hundred fifty thousand (150,000) persons shall exercise any zoning authority outside the boundaries of the county wherein it is located without the approval of the quorum court of the county wherein the city is not located and the approval of the governing bodies of all other cities having zoning authority over the area.

(3) Cities having a population of eight thousand (8,000) persons or less:

(A) Shall have a jurisdictional area that does not exceed one (1) mile beyond the corporate limits; and

(B) Shall not exercise any zoning authority outside the corporate limits.

(4) Cities now having an eight thousand (8,000) population or more and situated on a navigable stream may administer and enforce zoning ordinances outside their corporate limits but may not exceed the territorial limits under subdivision (a)(2) of this section.

(5) The city populations will be based on the most recent federal decennial census.

(b)

(1) The planning commission shall designate the area within the territorial jurisdiction for which it will prepare plans, ordinances, and regulations.

(2) A description of the boundaries of the area shall be filed with the city clerk and with the county recorder.