All actions for the recovery of the possession of real property must be commenced in the county in which the real property, or any part thereof, affected by such action or actions is situated.
Mont. Code Ann. § 25-31-205
Actions for forcible entry or unlawful detainer
En
Official source: Montana Code Annotated (Montana Legislature). Reproduced from public-domain Montana statutes; confirm against the official source for the current text. Not legal advice.