Groton Map
Groton is a city in Brown County, South Dakota, United States. The population was 1,458 at the 2010 census.
Groton is located at 45°27?4?N 98°5?57?W / 45.45111°N 98.09917°W / 45.45111; -98.09917 (45.451015, -98.099050).
According to the United States Census Bureau, the city has a total area of 1.7 square miles (4.4 km²), all of it land.
Nearby cities include Bath, Pierpont, Columbia, Claremont, Langford.