Frederick is a city in Tillman County, Oklahoma, United States. The population was 3,940 at the 2010 census. It is the county seat of Tillman County. This is an agriculture based community primarily with wheat, cotton, and cattle.
The public school team name is the Bombers, and they play football at the Bomber Bowl. Frederick was a football powerhouse, in the 1990s, winning the class 3-A State Championship in 1993, 1994, 1995 and the class 2-A State Championship in 1996.
Frederick is also one of a small number of towns in Oklahoma to still have a Carnegie Library as its public library.
Frederick was a major stop on the Wichita Falls and Northwestern Railway, one of the Frank Kell and Joseph A. Kemp properties which operated from 1906 to 1923 from Wichita Falls to Forgan in the Oklahoma Panhandle. The line was sold to the Missouri-Kansas-Texas Railroad. The link to Frederick was abandoned in 1973, when Altus, Oklahoma became the northern terminus of the successor railroad.