Duncan is a city and county seat of Stephens County, Oklahoma, United States. The population was 22,310 at the 2020 census. Its main claim to fame is as the birthplace of the Halliburton Corporation. Erle P. Halliburton established the New Method Oil Well Cementing Company in 1919. Halliburton maintains seven different complexes in Duncan plus an employee recreational park, but the corporate offices relocated first to Dallas and later to Houston. Centrally located in Stephens County, Duncan became the county seat after Oklahoma achieved statehood in 1907. Oil wells opened in Stephens County in 1918 and led to rapid development. Cotton was a dominant crop until the Dust Bowl brought its decline, but cattle remains an important part of the economy. The Chisholm Trail passed to the east of Duncan prior to the town's founding, which is home to the Chisholm Trail Heritage Center.

Wichita Falls ( WITCH-i-tah) is a city in and the county seat of Wichita County, Texas, United States. It is the principal city of the Wichita Falls Metropolitan Statistical Area, which encompasses all of Archer, Clay, and Wichita counties. According to the 2010 census, it had a population of 104,553, making it the 38th-most populous city in Texas. In addition, its central business district is 5 miles (8 km) from Sheppard Air Force Base, which is home to the Air Force's largest technical training wing and the Euro-NATO Joint Jet Pilot Training program, the world's only multinationally staffed and managed flying training program chartered to produce combat pilots for both USAF and NATO. The city is home to the Newby-McMahon Building (otherwise known as the "world's littlest skyscraper"), constructed downtown in 1919 and featured in Robert Ripley's Ripley's Believe It or Not!.

Lawton is a city in, and the county seat of, Comanche County, in the U.S. state of Oklahoma. Located in southwestern Oklahoma, approximately 87 mi (140 km) southwest of Oklahoma City, it is the principal city of the Lawton, Oklahoma, metropolitan statistical area. According to the 2010 census, Lawton's population was 96,867, making it the fifth-largest city in the state, and the largest in Western Oklahoma.Developed on former reservation lands of the Kiowa, Comanche, and Apache Indians, Lawton was founded by European Americans on 6 August 1901. It was named after Major General Henry Ware Lawton, who served in the Civil War, where he earned the Medal of Honor, and was killed in action in the Philippine–American War. Lawton's landscape is typical of the Great Plains, with flat topography and gently rolling hills, while the area north of the city is marked by the Wichita Mountains. The city's proximity to the Fort Sill Military Reservation, formerly the base of the Apache territory before statehood, gave Lawton economic and population stability throughout the 20th century.Although Lawton's economy is still largely dependent on Fort Sill, it has grown to encompass manufacturing, higher education, health care, and retail. The city has a council-manager government; the city council members are elected from single-member districts and the mayor is elected at-large. They hire a professional city manager to direct daily operations. Interstate 44 and three major United States highways serve the city, while Lawton-Fort Sill Regional Airport connects Lawton by air. Recreation can be found at the city's many parks, lakes, museums, and festivals. Notable residents of the city include many musical and literary artists, as well as several professional athletes.

Medicine Park is a town in Comanche County, Oklahoma, United States, situated in the Wichita Mountains near the entrance to the 60,000-acre (240 km2) Wichita Mountain Wildlife Refuge. Medicine Park has a long history as a vintage cobblestone resort town. Medicine Park is located near the city of Lawton and Fort Sill. It is an exurb, part of the Lawton Metropolitan Statistical Area. Many of the original structures are constructed of naturally formed cobblestones—these red granite cobblestones are unique to the Wichita Mountains. The population was 382 at the 2010 census.