Buchanan County is a former county in the U.S. state of Minnesota. It was established May 23, 1857, as a county in the Minnesota Territory, named after President James Buchanan.[1] It comprised the 24 northern townships, now forming the northern half of Pine County, Minnesota. The Buchanan County seat was Fortuna[1] (known today as Sandstone). This county was dissolved and incorporated with Pine County in 1861.
In recent years, residents of Pine County proposed dividing the county in half, re-introducing Buchanan County. The referendum for this proposal went to ballot in 2000 and was rejected.