South Dakota's 21st State Senate district | |
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South Dakota's 21st legislative district is one of 35 districts in the South Dakota Legislature. Each district is represented by 1 senator and 2 representatives. In the Senate, it has been represented by Republican Erin Tobin since 2021. [1] In the House, it has been represented by Republicans Jim Halverson since 2025 and Marty Overweg since 2020. [2]
The district is located within Aurora, Charles Mix, Douglas, Gregory, and Tripp counties in southern South Dakota. Its largest city is Platte. [3] The district contains the entirety of the Yankton Indian Reservation.