Monongalia County is a defunct county that was located in West Central Minnesota and was established in March 1858 by the Territorial Legislature. Monongalia County was absorbed by Kandiyohi County in January 1871 following the passage of an act by the State Legislature on March 7, 1870 and the approval by voters of Monongalia County by a 104 majority on the November 8, 1870 ballot. Monongalia County was named after residents of the county of the same name in Virginia (now West Virginia) came to the region. Mongonalia comes from the Unami word "Monongahela" meaning "river of high or crumbling banks." Sources: The Weekly Pioneer and Democrat, April 8, 1858 (p. 6). The St. Cloud Journal, November 17, 1870 (p. 4). Kandiyohi County website.