Thomas is a city in Custer County, Oklahoma, United States. The population was 1,181 at the 2010 census.
Thomas is located at 35°44′47″N 98°44′54″W / 35.74639°N 98.74833°W / 35.74639; -98.74833 (35.746419, -98.748264). According to the United States Census Bureau, the city has a total area of 1.2 square miles (3.1 km), all of it land.
As of the census of 2000, there were 1,238 people, 486 households, and 337 families residing in the city. The population density was 1,041.8 people per square mile (401.7/km²). There were 596 housing units at an average density of 501.5 per square mile (193.4/km²). The racial makeup of the city was 88.85% White, 0.08% African American, 8.08% Native American, 0.57% from other races, and 2.42% from two or more races. Hispanic or Latino of any race were 1.70% of the population.
There were 486 households out of which 31.7% had children under the age of 18 living with them, 56.4% were married couples living together, 10.3% had a female householder with no husband present, and 30.5% were non-families. 28.6% of all households were made up of individuals and 14.8% had someone living alone who was 65 years of age or older. The average household size was 2.43 and the average family size was 2.99.
In the city, the population was spread out with 25.8% under the age of 18, 6.9% from 18 to 24, 23.5% from 25 to 44, 21.1% from 45 to 64, and 22.6% who were 65 years of age or older. The median age was 41 years. For every 100 females, there were 91.0 males. For every 100 females age 18 and over, there were 83.6 males.
The median income for a household in the city was $30,083, and the median income for a family was $36,667. Males had a median income of $30,000 versus $17,440 for females. The per capita income for the city was $15,693. About 13.0% of families and 17.2% of the population were below the poverty line, including 25.7% of those under age 18 and 18.2% of those age 65 or over.