Fort Sill, OK

ZIP code 73503 is located in Lawton, Oklahoma. It is home to several landmarks, including the historic Museum of the Great Plains, which showcases the region's cultural and natural history. Additionally, nearby is the Comanche National Museum and Cultural Center, dedicated to preserving the legacy of the Comanche people. The zip code also encompasses parts of Fort Sill, a historic Army post established in the 19th century.