[5] Located approximately 40 miles north of Amarillo, the city is named for its founder, Louis Dumas (1856–1923).

Window on the Plains Museum, which offers exhibits on Moore County and the Texas Panhandle, is located on South Dumas Avenue, the main thoroughfare.

[7] Composed in the late 1920s by Phil Baxter (a native Texan who lived for a time in Dumas) and Carl Moore, the song has also sometimes been claimed by Dumas in Desha County in southeastern Arkansas.

[8] As of the 2020 United States census, there were 14,501 people, 4,343 households, and 3,195 families residing in the city.

[12] A large meatpacking plant in Cactus is a major employer for Moore County.

The plant processes up to 5,000 head of cattle per day, and has a predominantly immigrant workforce.

The primary function of the school is to provide an alternative education for students who are at risk of dropping out of school, needing to recover lost credits, or desire to accelerate their education experiences to pursue college or career goals.