Todd County is a county in the central part of the U.S. state of Minnesota. As of the 2020 census, the population was 25,262. Its county seat is Long Prairie. The county was created by the Minnesota Territorial legislature on February 20, 1855, although the county government was not organized until January 1, 1867, with Long Prairie as the county seat. It was na…Todd County is a county in the central part of the U.S. state of Minnesota. As of the 2020 census, the population was 25,262. Its county seat is Long Prairie. The county was created by the Minnesota Territorial legislature on February 20, 1855, although the county government was not organized until January 1, 1867, with Long Prairie as the county seat. It was named for John Blair Smith Todd, who was a delegate from Dakota Territory to the United States House of Representatives, and general in the Union Army during the American Civil War.