Texas City is a city in Galveston County, Texas, United States. Located on the southwest shoreline of Galveston Bay, Texas City is a busy deepwater port on Texas's Gulf Coast, as well as a petroleum-refining and petrochemical-manufacturing center. The population was 51,898 at the 2020 census, making it the third-largest city in Galveston County, behind League City and Galveston. It is a part of the Houston metropolitan area. The city is notable as the site of a major explosion in 1947 that demolished the port and much of the city.

Galveston County is a county in the U.S. state of Texas, located along the Gulf Coast adjacent to Galveston Bay. As of the 2020 census, its population was 350,682. The county was founded in 1838. The county seat is the City of Galveston, founded the following year, and located on Galveston Island. The most-populous municipality in the county is League City, a suburb of Houston at the northern end of the county, which surpassed Galveston in population during the early 2000s.