It is a suburb of San Antonio to the northeast, and is adjacent to Randolph Air Force Base.

The city also borders Schertz, Texas to its east, Selma to its north, Live Oak to its west, and Converse to its southwest.

The earliest portion of what would later become Universal City, Texas was platted on January 30, 1931.

According to the United States Census Bureau, the city has a total area of 5.7 square miles (15 km2), all land.

[8] As of the 2020 United States census, there were 19,720 people, 7,233 households, and 5,159 families residing in the city.

[12] Universal City is also home to two private K–12 schools: First Baptist Academy of Universal City (FBA); and Calvary Chapel Christian Academy (CCCA), a tuition-free institution.