About This Place
Letcher is a town in Sanborn County, South Dakota, United States. The population was 173 at the 2010 census.
Letcher is located at 43°53′52″N 98°8′22″W / 43.89778°N 98.13944°W / 43.89778; -98.13944 (43.897780, -98.139366).
According to the United States Census Bureau, the town has a total area of 0.6 square miles (1.7 km²), of which, 0.6 square miles (1.6 km²) of it is land and 0.04 square miles (0.1 km²) of it (6.25%) is water.