New Mexico Statutes Chapter 3. Municipalities § 3-19-5. Planning and platting jurisdiction

A. Each municipality shall have planning and platting jurisdiction within its municipal boundary. Except as provided in Subsection B of this section, the planning and platting jurisdiction of a municipality:

B. A municipality located in a class A county with a population of more than three hundred thousand persons shall not have planning and platting jurisdiction in the unincorporated area of the county.

C. If territory not lying within the boundary of a municipality is within the planning and platting jurisdiction of more than one municipality, the planning and platting jurisdiction of each municipality shall terminate equidistant from the boundary of each municipality unless one municipality has a population of fewer than two thousand five hundred persons and another municipality has a population of more than two thousand five hundred persons according to the most recent census. Then the planning and platting jurisdiction of the municipality having the greatest population extends to such territory.