Orange is a city in Orange County, Texas, United States. As of the 2000 census, the city population was 18,643. It is the county seat of Orange County, and is the easternmost city in Texas. Located on the Sabine River at the border with Louisiana, it is part of the BeaumontPort Arthur Metropolitan Statistical Area. Founded in 1836, it is a deep-water port (to the Gulf of Mexico). Orange's growth led to the arrival of many immigrants in the late 19th century, including a moderately-sized Jewish population by 1896. In 1898, the County built a courthouse in the city, which eventually burned down and was replaced by the Orange County Courthouse.