city, seat (1907) of Texas county, northwestern Oklahoma, U.S. It lies on the high plains of the Panhandle, near the North Canadian River. Originally called Sanford, it was founded by E.T. Guymon, a grocer and land speculator, in 1901 on the arrival of the Rock Island Railroad (Chicago, Rock Island, and Pacific Railroad Company). The city is a trading centre for an irrigated agricultural and gas and oil region centred in the huge Guymon-Hugoton gas field. There are pipeline facilities and helium and gas extraction plants in the area. The city's Texas County Feed Yard has a capacity for 27,500 head of cattle, and there are livestock auctions and meat-packing activities. Pioneer Days, an annual rodeo and parade held in May, celebrates the Panhandle's incorporation into Oklahoma Territory. Oklahoma Panhandle State University (1909) is at Goodwell, 10 miles (16 km) southwest. Inc. town, 1905; city, 1923. Pop. (1990) 7,803; (2000) 10,472.