Duncanville is a medium-sized city located in the state of Texas. With a population of 39,413 people and 11 associated neighborhoods, Duncanville is the 88th largest community in Texas.

Telecommuters are a relatively large percentage of the workforce: 10.47% of people work from home. While this number may seem small overall, as a fraction of the total workforce it is high relative to the nation. These workers are often telecommuters who work in knowledge-based, white-collar professions. For example, Silicon Valley has large numbers of people who telecommute. Other at-home workers may be self-employed people who operate small businesses out of their homes.

The population of Duncanville overall has a level of education that is slightly above the US average for all US cities and towns of 21.84%. Of adults 25 and older in Duncanville, 23.93% have at least a bachelor's degree.

The per capita income in Duncanville in 2022 was $29,349, which is middle income relative to Texas, and lower middle income relative to the rest of the US. This equates to an annual income of $117,396 for a family of four. However, Duncanville contains both very wealthy and poor people as well.

Duncanville is an extremely ethnically-diverse city. The people who call Duncanville home describe themselves as belonging to a variety of racial and ethnic groups. People of Hispanic or Latino origin are the most prevalent group in Duncanville, accounting for 42.06% of the city’s residents (people of Hispanic or Latino origin can be of any race). The greatest number of Duncanville residents report their race to be Black or African-American, followed by White. Important ancestries of people in Duncanville include English, German, Irish, Scottish, and French.

Foreign born people are also an important part of Duncanville's cultural character, accounting for 15.91% of the city’s population.

The most common language spoken in Duncanville is English. Other important languages spoken here include Spanish and Arabic.