AREA INFORMATION County seat of Texas County Largest city in the 6,000 square mile panhandle. Shopping hub for Oklahoma Panhandle, northwest Texas and southeast Kansas. Rapidly growing city and regional markets due to gaming and Seaboard. The city's largest employer, Seaboard, operates at double shift capacity with 3,100 employees having an annual payroll excess of $94 Million. Oklahoma Panhandle State University is located in nearby Goodwell, OK. Golden Mesa Casino - 42,000 sf casino just 3 miles southwest of Guymon opened in 2019.