Longview, city, seat of Gregg County and also in Harrison County, northeastern Texas, in a major petroleum-producing region; incorporated 1871. Manufactures include processed petroleum and natural gas, oil-field equipment, steel goods, chemicals, and electronic components. LeTourneau University (1946) is here. Longview, founded by the railroad in 1870, is named for the view from its highest hill. Petroleum was discovered here in 1929. Population 62,762 (1980); 70,311 (1990); 73,344 (2000).