Walworth County, South Dakota
Walworth County Courthouse, Selby
Location in the state of South Dakota
South Dakota's location in the U.S.
Founded	1873 (created) 1883 (organized)
Named for	Walworth County, Wisconsin
Seat	Selby
Largest city	Mobridge
Area
• Total	745 sq mi (1,930 km2)
• Land	709 sq mi (1,836 km2)
• Water	36 sq mi (93 km2), 4.8
Time zone	Central: UTC-6/-5
Website	walworthco.org
Footnotes: For infobox source see

County Well Data

Well ID	Operator Name	Well Type	Well Status
40-129-05000	G. W. Smith	Dry Hole	Abandoned
40-129-05001	Herndon Drilling Company	Never Drilled	Never Drilled
40-129-05002	Peppers Refinning Co.	Dry Hole	Abandoned
40-129-20001	Wilhite-Simcox-Star Drilling Inc.	Dry Hole	Abandoned
40-129-20002	Wilhite-Simcox-Star Drilling Inc.	Water	Active
40-129-20003	Wilhite-Simcox-Star Drilling Inc.	Dry Hole	Abandoned

For data sources see