Area code 918 serves northeastern Oklahoma, including Tulsa, Broken Arrow, Owasso, and Muskogee. Created in 1953 from a split of the original 405 area code, it is the second-oldest code in the state. It was overlaid by area code 539 in 2011 to support continued growth, particularly in the Tulsa metropolitan area. The region has deep ties to the oil industry, Native American heritage, and arts and culture. 918 remains a well-known and respected code, often used in local branding and civic identity. It symbolizes Tulsa’s rich history and modern expansion.