No change of name shall be so construed as to alter or modify the boundaries of the county as the same existed and were established under the former name of the county, but such boundaries shall be and remain the same until changed according to law.
Mont. Code Ann. § 7-2-2514
Effect of name change on county boundaries
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.