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# The 713 Area Code

The 713 area code serves the Houston metropolitan area in southeast Texas, covering the city of Houston and surrounding communities including parts of Harris County. Established in 1961, this area code has become one of the most recognizable in Texas, serving millions of residents and businesses in one of the nation's largest cities. The 713 area code is particularly associated with Houston's diverse economy, which includes major industries such as energy, petrochemicals, aerospace, and international trade. Businesses and residents throughout the region use this area code for local and long-distance communications, making it an integral part of Houston's identity.

The 713 area code is part of the North American Numbering Plan (NANP), a standardized system that organizes telephone numbers across the United States, Canada, and several Caribbean nations. Under this system, area codes are assigned to geographic regions, with each code consisting of three digits. The NANP is managed by the North American Numbering Plan Administration (NANPA), which ensures that area codes are distributed efficiently and that the system can accommodate population growth and technological changes. As Houston's population expanded, additional area codes such as 281 and 832 were introduced to the region to meet increasing demand for phone numbers, demonstrating how the NANP adapts to serve growing communities.