Grant County, South Dakota covers an area of approximately 688 square miles with a geographic center of 45.19163263°(N), -96.76081419°(W).
These are the far north, south, east, and west coordinates of Grant County, South Dakota, comprising a rectangle that encapsulates it. Please note that not all coordinates inside this rectangle will fall inside of Grant County, South Dakota, as it (most likely) doesn't fill up the entire rectangle.
According to data gathered by the Shuttle Radar Topography Mission. The lowest elevation in Grant County is 261 meters (856 feet). This ranks Grant County 2nd in terms of lowest elevations when compared to a total of 66 counties in South Dakota.
Grant County's highest elevation is 628 meters (2,060 feet) which ranks it 29th in terms of highest elevations when compared to a total of 66 counties in South Dakota.