Area code 318 covers northern and central Louisiana, including cities like Shreveport, Monroe, Alexandria, and Natchitoches. It was one of the original area codes established in 1957 when Louisiana was divided into multiple regions for telecom service. The 318 region is known for its diverse culture, historic architecture, and strong ties to the oil, gas, and agriculture industries. It includes numerous universities and military installations, such as Barksdale Air Force Base. In 2025, area code 457 is expected to overlay 318 due to number depletion, which will require ten-digit dialing. Despite upcoming changes, 318 remains a recognizable and respected area code throughout North Louisiana.