[4] Edmunds County is part of the Aberdeen, SD Micropolitan Statistical Area.

The terrain of Edmunds County consists of rolling hills, mostly dedicated to agriculture.

The terrain's highest point is on the west portion of the north boundary line, at 1,978 ft (603 m) ASL.

Edmunds County is where the Learjet of the PGA golfer Payne Stewart crashed, killing him and five others on board.

The plane crashed just south of the community of Mina at the approximate coordinates of 45°25' N 98°45' W. Edmunds County voters have long been reliably Republican.