Faulkton is a city in and the county seat of Faulk County, South Dakota, United States. Its nickname is the Carousel City. The population was 736 at the 2010 census.
Faulkton is located at 45°2′0″N 99°7′41″W / 45.033333°N 99.12806°W / 45.033333; -99.12806 (45.033209, -99.128067).
According to the United States Census Bureau, the city has a total area of 1.0 square miles (2.7 km²), all of it land.