Redfield is a city in and the county seat of Spink County, South Dakota, United States. The population was 2,333 at the 2010 census. The city is not to be confused with the surrounding Redfield Township, which encompasses unincorporated areas outside of the city limits.
Redfield is located at 44°52′31″N 98°31′04″W / 44.875145°N 98.517850°W / 44.875145; -98.517850.
According to the United States Census Bureau, the city has a total area of 1.8 square miles (4.6 km2), of which, 1.7 square miles (4.5 km2) of it is land and 0.04 square miles (0.1 km2) of it (1.70%) is water.