Waseca County is a county in the U.S. state of Minnesota. As of the 2020 census, the population was 18,968. Its county seat is Waseca.

Minnesota State Highway 30 (MN 30) is a 265.503-mile-long (427.286 km) highway in southwest and southeast Minnesota, which runs from South Dakota Highway 34 at the South Dakota state line near Airlie, west of Pipestone, and continues to its eastern terminus at its intersection with Minnesota Highway 43 in Rushford.