Edmunds County is a county in the U.S. state of South Dakota. At the 2020 census, the population was 3,986. Its county seat is Ipswich. The county was established in 1873 and organized in 1883. It is named for Newton Edmunds, the second Governor of Dakota Territory.

McPherson County is a county in the U.S. state of South Dakota. As of the 2020 census, the population was 2,411. Its county seat is Leola.