About This Place
Delmont is a city in Douglas County, South Dakota, United States. The population was 234 at the 2010 census.
Delmont is located at 43°16′1″N 98°9′47″W / 43.26694°N 98.16306°W / 43.26694; -98.16306 (43.267013, -98.162996).
According to the United States Census Bureau, the city has a total area of 0.8 square miles (2.0 km²), all of it land.