About This Place
Newtown is a city in Sullivan County, Missouri, United States. The population was 183 at the 2010 census, at which time it was a town.
Newtown is located at 40°22′33″N 93°20′4″W / 40.37583°N 93.33444°W / 40.37583; -93.33444 (40.375879, -93.334578).
According to the United States Census Bureau, the town has a total area of 0.2 square miles (0.6 km²), all of it land.