city, seat (1838) of Jefferson county, southeastern Texas, U.S., at the head of navigation on the Neches River (an arm of the Sabine-Neches Waterway), 85 miles (137 km) east-northeast of Houston. With Port Arthur and Orange, it forms the “Golden Triangle” petrochemical and industrial complex.

In 1824 Noah Tevis founded the settlement of Tevis Bluff; in 1835 he sold 50 acres (20 hectares) of land for a town site to Henry Millard, who supposedly named it Beaumont for his wife's family. Lumbering, rice cultivation, and shipping were early activities, and in the 1890s five railroads came through the site. Spindletop, the first major oil field in Texas, was discovered nearby when the Lucas Well blew in 1901, and a boom city sprang up. After the completion of a deep-river channel in 1916, Beaumont became a key port of the Texas petrochemical industry with large oil refineries and shipbuilding, grain storage, and rice-processing facilities. Salt and sulfur domes are also worked in the area. The Lucas Gusher Monument and the reconstructed Gladys City–Spindletop Boomtown commemorate the oil strike; the Spindletop–Gladys City Museum is operated by Lamar University (1923). The Texas Energy Museum also celebrates Beaumont's role in the development of the Texas oil industry. Other institutions of note within the city are the Art Museum of Southeast Texas, the McFaddin-Ward House Museum and Carriage House, the Babe Didrikson Zaharias Museum, and the Edison Plaza Museum. The city hosts the South Texas State Fair, the Neches River Festival, and the Kaleidoscope Arts and Crafts Festival. Inc. town, 1838; city, 1881. Pop. (1990) city, 114,323; Beaumont–Port Arthur MSA, 361,226; (2000) city, 113,866; Beaumont–Port Arthur MSA, 385,090.