Piedmont is a city in Meade County, South Dakota, United States. According to the 2010 census, the population was 222. Piedmont lies along Interstate 90 between Rapid City and Sturgis. Piedmont has been assigned the ZIP Code of 57769.
Piedmont takes its name from a French word meaning "the foot of the mountain," because it lies on the eastern slope of the Black Hills. Piedmont was founded in 1890 and remained unincorporated for nearly 117 years. It officially became a city August 16, 2007, and elected its first town board in November 2007. The area was first inhabited in the mid-1870s.
Piedmont is located in part of an area referred to as the Red Valley, or Race Track, a rock layer in the Spearfish Formation which forms a valley circling the Black Hills. It is mostly red shale with beds of gypsum. Piedmont lies west of Interstate 90, north of Summerset, east of the Black Hills National Forest and south of Elk Creek.
According to the United States Census Bureau, the city has a total area of 0.29 square miles (0.75 km2), all land.
As of the census of 2010, there were 222 people, 101 households, and 64 families residing in the city.