Area code 405 serves central Oklahoma, including Oklahoma City and its surrounding suburbs. As one of the original area codes from 1947, it once covered the entire state but now focuses on the capital region. In 2021, it was overlaid with area code 572, requiring ten-digit dialing. Oklahoma City is a growing hub for energy, aerospace, healthcare, and government. Area code 405 remains closely tied to the identity of Oklahoma’s seat of power and progress, representing both traditional values and a modernizing economy. It is an enduring symbol of the Sooner State’s central axis.