Area code 409 serves southeastern Texas, including Galveston, Beaumont, and Port Arthur. Established in 1983 as a split from area code 713, it covers a coastal and industrial region known for petrochemical plants, shipping, and historic ties to the oil boom. The area is also prone to hurricanes, contributing to a culture of resilience and recovery. Ten-digit dialing is required. Area code 409 reflects a unique blend of maritime heritage, industrial strength, and Texas coastal identity. It’s a code known for grit, history, and Gulf Coast pride.