Clark is a city in and county chair of Clark County, South Dakota, United States. The population was 1,148 at the 2020 census.

A broadcast office was normal at Clark in 1880. Clark was platted in 1882. The city took its post from Clark County. An ahead of time variant publish was Clark Center.

In 1882, railroad tracks were first built through the center of Clark. The Burlington Northern railroad and County Highway 212 ran parallel to one different and not speaking Clark into halves – the north half and the south half. Highway 212 similarly runs through the middle of Clark, and provides a deal with travel route starting in Minneapolis, Minnesota, into Clark, then went to the Black Hills and to Yellowstone National Park.

Clark was officially founded in 1886, three years previously South Dakota became a state. Not long after in June 1899, the local direction took action, and the Clark City Council passed Ordinance No. 26. Serving as one of the first regulations enacted in Clark, Ordinance No. 26 made it unlawful for a person to ride a horse or bicycle, faster than eight miles an hour the length of Commercial Street. Eighteen years later, in 1917, residents from Elrod, a small town east of Clark, made a bungled effort to change the county seat from Clark to Elrod. As of 2019, Clark nevertheless serves as the county chair and houses the modest Clark County Courthouse and a public library.