Blaine County is a county in the U.S. state of Montana. As of the 2020 census, the population was 7,044. Its county seat is Chinook. The county was named for James G. Blaine, former United States Secretary of State. It is on the north line of the state, and thus shares the southern border of Canada opposite Saskatchewan.
blaine county is a county in the us state of montana as of the 2020 census the population was 7044 its county seat is chinook the county was named for james g blaine former united states secretary of state it is on the north line of the state and thus shares the southern border of canada opposite saskatchewan