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.

A relatively large number of people in Duncanville telecommute to their jobs. Overall, about 10.47% of the workforce works from home. While this may seem like a small number, as a fraction of the total workforce it ranks among the highest in the country. 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 citizens of Duncanville are slightly better educated than the national average of 21.84% for all cities and towns, with 23.93% of adults in Duncanville having a bachelor's degree or advanced degree.

The per capita income in Duncanville in 2018 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.