Fort Sill is a United States Army post north of Lawton, Oklahoma, about 85 miles (137 km) southwest of Oklahoma City. It covers almost 94,000 acres (38,000 ha).

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 2020 census, Lawton's population was 90,381, making it the sixth-largest city in the state, and the largest in Western Oklahoma.