Ennis is a medium-sized city located in the state of Texas. With a population of 22,890 people and five associated neighborhoods, Ennis is the 145th largest community in Texas. Ennis has seen a significant amount of newer housing growth in recent years. Quite often, new home construction is the result of new residents moving in who are middle class or wealthier, attracted by jobs, a healthy local economy, or other amenities as they leave nearby or far away areas for greener pastures. This seems to be the case in Ennis, where the median household income is $73,176.00.

Being a small city, Ennis does not have a public transit system used by locals to get to and from work.

The percentage of adults in Ennis who are college-educated is close to the national average for all communities of 21.84%: 20.31% of the adults in Ennis have a bachelor's degree or advanced degree.

The per capita income in Ennis in 2022 was $31,278, which is upper middle income relative to Texas, and middle income relative to the rest of the US. This equates to an annual income of $125,112 for a family of four. However, Ennis contains both very wealthy and poor people as well.

Ennis is an extremely ethnically-diverse city. The people who call Ennis 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 Ennis, accounting for 47.74% of the city’s residents (people of Hispanic or Latino origin can be of any race). The greatest number of Ennis residents report their race to be White, followed by Black or African-American. Important ancestries of people in Ennis include German, English, Czech, Irish, and Scots-Irish.

Foreign born people are also an important part of Ennis's cultural character, accounting for 16.46% of the city’s population.

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