Dexter is a city in Stoddard County, Missouri, United States, founded in 1873. The mayor is D.R. Burleson. The population was 7,356 at the 2000 census.
Dexter is located at 36°47′48″N 89°57′45″W / 36.79667°N 89.9625°W / 36.79667; -89.9625 (36.796655, -89.962518).
According to the United States Census Bureau, the city has a total area of 6.2 square miles (16.1 km²), of which 6.1 square miles (15.8 km²) is land and 0.1 square mile (0.3 km²) (2.09%) is water.