South Dakota's 2nd congressional district is an obsolete district. It was created after the 1910 census and abolished after the 1980 census. Members were elected at-large until the formation of individual districts after the 1910 Census. From 1913 until 1933, the 2nd District covered much of northeastern South Dakota, including the cities of Aberdeen, Brookings, Huron, and Watertown. When South Dakota's 3rd congressional district was eliminated after the 1930 Census, the 2nd District was relocated to cover all of the counties in South Dakota west of the Missouri River. Population changes eventually moved the district's boundaries further east. During the 97th Congress, it covered all but the 21 easternmost counties in the state.
List of members representing the district
- Martis, Kenneth C. (1989). The Historical Atlas of Political Parties in the United States Congress. New York: Macmillan Publishing Company.
- Martis, Kenneth C. (1982). The Historical Atlas of United States Congressional Districts. New York: Macmillan Publishing Company.
- Congressional Biographical Directory of the United States 1774–present