- the text in this section is copied from an article in Wikipedia
Monongalia County is a former county in the U.S. state of Minnesota. It was identified in 1858, although the Dakota War of 1862 delayed its organization until 1861. The county seat was at New London,after a brief staying at Columbia.
In 1870 the state legislature ordered it merged with Kandiyohi County, its southern neighbor. Neither county had been able up till then to raise enough money to build a courthouse. In February 1871, they finally agreed to make Willmar the new county seat,succeeding to Kandiyohi Station.
- source: Source:Population of States and Counties of the United States: 1790-1990
| Census Year || Population
| 1860 || 350
| 1870 || 3,161