Latitude / Longitude:
44° 47′ 18″ N, 103° 38′ 57″ W
Central (CST) (UTC-6)
Arpan is an unincorporated community in Butte County, in the U.S. state of South Dakota.
Arpan was platted in 1910, and named for a local family. A post office called Arpan was in operation from 1911 until 1940.