Montana Title 7. Local Government § 7-2-4608. Restrictions on annexation power

(1) Territory that is part of an incorporated city or town at the time a petition for proposed annexation is presented as provided in 7-2-4601 may not be annexed under the provisions of this part.

(2) Except as provided in subsection (3), a parcel of land that, at the time a petition for proposed annexation is presented to the governing body of a city or town, is used in whole or in part for agricultural, mining, smelting, refining, transportation, or any industrial or manufacturing purpose or for any purpose incident to those uses may not be annexed under the provisions of this part.

(3) The provisions of subsection (2) do not apply if the petition submitted to the governing body of the city or town is signed by 100% of the owners of the land proposed to be annexed and the annexation is in accordance with the city's or town's adopted growth policy.