New Underwood, SD
New Underwood is a city in Pennington County, South Dakota, United States. The population was 660 at the 2010 census.
New Underwood is located at 44°5′38″N 102°50′3″W / 44.09389°N 102.83417°W / 44.09389; -102.83417 (44.093843, -102.834055).
According to the United States Census Bureau, the city has a total area of 0.5 square miles (1.2 km²), of which, 0.5 square miles (1.2 km²) of it is land and 2.13% is water.