Roma is a city in Starr County, Texas, United States. The population was 9,765 at the 2010 census. The city is located along the Rio Grande, across from Ciudad Miguel Alemán in Tamaulipas, Mexico.The city is also popularly known as Roma-Los Saenz, since the incorporated city also took the area known as Los Saenz.It serves as a port of entry from Mexico into the U.S. via the Roma-Ciudad Miguel Alemán International Bridge.