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Brookings County, South Dakota, United States (44.37636 -96.79252)
Brookings County is on the east side of South Dakota. Its east boundary line abuts the west boundary line of the state of Minnesota. The Big Sioux River flows south-southeastward through the east central part of the county; its point of entry into Moody County marks Brookings County's lowest elevation: 1,568' (478m) ASL.