Blunt is a city in Hughes County, South Dakota, United States. It is part of the Pierre, South Dakota Micropolitan Statistical Area. The population was 354 at the 2010 census.
According to the United States Census Bureau, the city has a total area of 0.5 square miles (1.3 km²), all of it land.
Blunt has been assigned the ZIP code 57522, and the FIPS place code 06180.