ORANGE, TEXAS. Orange, also known as the "Gateway City," is the county seat of Orange County. It is located on U.S. Highway 90, Adams Bayou, and the Southern Pacific and Missouri Pacific railroads and stands at the junction of the Sabine River and the Gulf Intracoastal Waterway in eastern Orange County near the Louisiana border. The community was originally called Green's Bluff for Resin (or Reason) Green, a Sabine River boatman who arrived there sometime before 1830. The town was renamed Madison in 1840 in honor of President James Madison. It obtained a post office in 1850 and became the county seat upon the 1852 organization of Orange County. To avoid confusion with a community called Madisonville, the town was renamed again when it incorporated in 1858, taking the name Orange from an orange grove owned by George Patillo.