Deweyville is a census-designated place (CDP) in Newton County, on the central eastern border of Texas, United States. The population was 1,023 at the 2010 census, down from 1,190 at the 2000 census.
Deweyville is located at 30°17′47″N 93°44′58″W / 30.29639°N 93.74944°W / 30.29639; -93.74944 (30.296478, -93.749441).
According to the United States Census Bureau, the CDP has a total area of 11.3 square miles (29 km), of which, 11.2 square miles (29 km) of it is land and 0.1 square miles (0.26 km) of it (0.71%) is water. it is located along the Sabine River.
As of the census of 2000, there were 1,190 people, 459 households, and 325 families residing in the CDP. The population density was 105.9 people per square mile (40.9/km²). There were 528 housing units at an average density of 47.0/sq mi (18.1/km²). The racial makeup of the CDP was 98.40% White, 0.42% Native American, 0.17% Asian, 0.17% from other races, and 0.84% from two or more races. Hispanic or Latino of any race were 0.84% of the population.
There were 459 households out of which 32.0% had children under the age of 18 living with them, 59.3% were married couples living together, 7.4% had a female householder with no husband present, and 29.0% were non-families. 24.4% of all households were made up of individuals and 10.2% had someone living alone who was 65 years of age or older. The average household size was 2.59 and the average family size was 3.11.
In the CDP, the population was spread out with 26.2% under the age of 18, 8.8% from 18 to 24, 28.7% from 25 to 44, 25.1% from 45 to 64, and 11.1% who were 65 years of age or older. The median age was 35 years. For every 100 females, there were 101.0 males. For every 100 females age 18 and over, there were 95.5 males.
The median income for a household in the CDP was $30,714, and the median income for a family was $35,150. Males had a median income of $35,250 versus $15,852 for females. The per capita income for the CDP was $13,136. About 13.5% of families and 17.8% of the population were below the poverty line, including 25.2% of those under age 18 and 7.4% of those age 65 or over.