Dell Rapids is a city in Minnehaha County, South Dakota, United States. The population was 3,633 at the 2010 census. It is known as "The little city with the big attractions." According to the United States Census Bureau, the city has a total area of 2.09 square miles (5.4 km²), of which, 2.03 square miles (5.25 km²) of it is land and 0.06 square miles (0.15 km²) is water.
Dell Rapids is home to two separate school systems: The Dell Rapids public school system and St. Mary, a private Catholic school. The public school system includes Dell Rapids High School, a middle school, and elementary as well as "Strive High", an alternative secondary-education institution. The mascot of the public school district is the "Quarriers", named after the large rose quartz rock quarry that is also in Dell Rapids. St. Mary's school also includes St. Mary High School, a middle school, and elementary school. The mascot of the St. Mary school district is the "Cardinals".