Dexter is a town in Chaves County, New Mexico, United States. The population was 1,266 at the 2010 census.
Dexter is located in south-central Chaves County at 33°11′46″N 104°22′13″W (33.196062, -104.370222), about 2 miles (3 km) west of the Pecos River. New Mexico State Road 2 passes through the town, leading northwest 17 miles (27 km) to Roswell, the county seat, and southeast 6 miles (10 km) to Hagerman.
According to the United States Census Bureau, Dexter has a total area of 0.81 square miles (2.1 km2), of which 0.73 square miles (1.9 km2) is land and 0.077 square miles (0.2 km2), or 7.88%, is water.
As of the census of 2000, there were 1,235 people, 390 households, and 333 families residing in the town. The population density was 1,681.2 people per square mile (653.2/km2). There were 434 housing units at an average density of 590.8 per square mile (229.5/km2). The racial makeup of the town was 60.00% White, 0.24% African American, 0.73% Native American, 35.47% from other races, and 3.56% from two or more races. Hispanic or Latino of any race were 71.17% of the population.
There were 390 households, out of which 47.9% had children under the age of 18 living with them, 62.3% were married couples living together, 17.7% had a female householder with no husband present, and 14.6% were non-families. 11.5% of all households were made up of individuals, and 4.9% had someone living alone who was 65 years of age or older.