title: Vermillion, South Dakota
text: Vermillion is a city in the southeastern part of the U.S. state of South Dakota. It is the county seat of Clay County, and it became a city in 1877. Vermillion is the tenth largest city in South Dakota; 10,571 people lived there at the 2010 census. The city is home to the University of South Dakota, a major college in the state.
  
  References
  
  Other websites 
  City of Vermillion website
  
  County seats in South Dakota
  Cities in South Dakota
  1877 establishments in the United States
  1870s establishments in Dakota Territory