Mullin is a town in Mills County in Northwestern Central Texas. The population was 179 at the 2010 census.
Mullin is located at 31°33′23″N 98°39′56″W / 31.55639°N 98.66556°W / 31.55639; -98.66556 (31.556394, -98.665468).
According to the United States Census Bureau, the town has a total area of 0.5 square miles (1.3 km), all of it land.
As of the census of 2000, there were 175 people, 69 households, and 48 families residing in the town. The population density was 376.5 people per square mile (146.9/km²). There were 84 housing units at an average density of 180.7/sq mi (70.5/km²). The racial makeup of the town was 90.86% White, 8.57% from other races, and 0.57% from two or more races. Hispanic or Latino of any race were 9.71% of the population.
There were 69 households out of which 27.5% had children under the age of 18 living with them, 56.5% were married couples living together, 7.2% had a female householder with no husband present, and 30.4% were non-families. 26.1% of all households were made up of individuals and 15.9% had someone living alone who was 65 years of age or older. The average household size was 2.54 and the average family size was 3.08.
In the town, the population was spread out with 28.6% under the age of 18, 4.6% from 18 to 24, 19.4% from 25 to 44, 25.1% from 45 to 64, and 22.3% who were 65 years of age or older. The median age was 42 years. For every 100 females, there were 94.4 males. For every 100 females age 18 and over, there were 108.3 males.
The median income for a household in the town was $24,167, and the median income for a family was $28,182. Males had a median income of $23,333 versus $19,375 for females. The per capita income for the town was $10,088. About 25.8% of families and 34.7% of the population were below the poverty line, including 47.9% of those under the age of eighteen and 18.9% of those sixty five or over.