Horizon City is a medium-sized city located in the state of Texas. With a population of 24,168 people and five associated neighborhoods, Horizon City is the 138th largest community in Texas. Horizon City 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 Horizon City, where the median household income is $65,702.00.

A relatively large number of people in Horizon City telecommute to their jobs. Overall, about 9.39% 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.

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

The citizens of Horizon City are slightly better educated than the national average of 21.84% for all cities and towns, with 22.47% of adults in Horizon City having a bachelor's degree or advanced degree.

The per capita income in Horizon City in 2022 was $22,543, which is low income relative to Texas and the nation. This equates to an annual income of $90,172 for a family of four. However, Horizon City contains both very wealthy and poor people as well.

Horizon City is an extremely ethnically-diverse city. The people who call Horizon City 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 Horizon City, accounting for 88.69% of the city’s residents (people of Hispanic or Latino origin can be of any race). The greatest number of Horizon City residents report their race to be White, followed by Black or African-American. Important ancestries of people in Horizon City include Irish, German, Italian, English, and Polish.

Foreign born people are also an important part of Horizon City's cultural character, accounting for 25.10% of the city’s population.

The most common language spoken in Horizon City is Spanish. Other important languages spoken here include English and Polish.