Area code 713 serves the Houston metropolitan area in southeastern Texas. One of the original area codes from 1947, it initially covered a much broader region before being split and overlaid due to Houston’s massive growth. Today, it is overlaid with 281, 832, and 346, requiring ten-digit dialing. Houston is a major U.S. city with influence in energy, aerospace, medicine, and international trade. Area code 713 is often associated with legacy institutions, inner-city Houston, and major business centers. It carries prestige and historic relevance in a rapidly evolving and diverse metropolitan area.