Latitude / Longitude:
45° 50′ 6″ N, 97° 23′ 31″ W
Central (CST) (UTC-6)
Hillhead is an unincorporated community in Marshall County, in the U.S. state of South Dakota.
An early variant name was Airmount. A post office called Airmount was established in 1916, the name was changed to Hillhead in 1917, and the post office closed in 1960.