North carolina constitution
Article VII
Section 1

The General Assembly shall not incorporate as a city or town, nor shall it authorize to be incorporated as a city or town, any territory lying within one mile of the corporate limits of any other city or town having a population of 5,000 or more according to the most recent decennial census of population taken by order of Congress, or lying within three miles of the corporate limits of any other city or town having a population of 10,000 or more according to the most recent decennial census of population taken by order of Congress, or lying within four miles of the corporate limits of any other city or town having a population of 25,000 or more according to the most recent decennial census of population taken by order of Congress, or lying within five miles of the corporate limits of any other city or town having a population of 50,000 or more according to the most recent decennial census of population taken by order of Congress. Notwithstanding the foregoing limitations, the General Assembly may incorporate a city or town by an act adopted by vote of three-fifths of all the members of each house.

Structure North carolina constitution

North carolina constitution

Article VII

Section 1

Section 2

Section 3