WHAT YOU NEED TO KNOW
Area code 713 serves the core of Houston, Texas, including Bellaire, West University Place, and Southside Place. Established in 1947 as one of the original NANP codes, it now covers the inner city and close-in suburbs of Harris County, serving approximately 2.3 million residents within Houston proper and overlaid by codes 832 and 346.
- Population: ~2.3 million residents in the city proper; ~7.3 million in the greater Houston metro
- Overlay: Overlay: 832 (added 1999), 346 (added 2014)
- Dialing: 10-digit dialing required
- Source Type: Local geographic code
Geographic Coverage
Geographic coverage for area code 713 is concentrated in the urban core of Houston and a cluster of small incorporated cities entirely surrounded by Houston, sometimes called the "Bayou Bend" municipalities. These include Bellaire, West University Place, Southside Place, Hunters Creek Village, Hedwig Village, Bunker Hill Village, Spring Valley Village, and Hilshire Village. All of these lie within Harris County. The code no longer covers Houston's suburban ring, which shifted to 281 and later 832 and 346 after successive splits.
Population and Business Context
Houston is the fourth-largest city in the United States by population and a major center for energy, petrochemicals, aerospace, healthcare, and international trade. The Port of Houston is one of the busiest in the country by total tonnage. The Texas Medical Center, the world's largest medical complex by several measures, operates within the 713 footprint. Businesses in industries ranging from oil and gas to biomedical research maintain local 713 numbers to signal a central Houston presence.
Area Code History
Area code 713 was assigned to the entire state of Texas in 1947 as one of the original 86 North American Numbering Plan codes. As Texas grew, the code was split repeatedly. The 512 code was carved out in 1983, 409 in 1984, and 210 in 1992. Code 281 split from 713 in 1996 to handle Houston's suburbs. Code 832 was overlaid in 1999, and 346 was added as a second overlay in 2014 to address numbering exhaustion.
How to Dial
Callers must use 10-digit dialing for all local calls within the 713, 832, and 346 overlay region. This means dialing the full area code plus the 7-digit number for every local call, including calls between two 713 numbers. Long-distance calls to numbers outside the overlay region require dialing 1 followed by the 10-digit number. The Federal Communications Commission mandated 10-digit dialing in the Houston metro when the 832 overlay was introduced in 1999.
Need a 713 Number for Your Houston Business?
Houston businesses that want a recognizable inner-city presence use 713 numbers to connect with local customers. Convirza provisions trackable local numbers in 713 and any other North American area code, so you can deploy a Houston line without a physical office in the city core. Setup takes minutes and numbers are ready to route calls immediately. Every call to your 713 number is scored for quality, recorded for review, and attributed to the exact marketing source that drove it using dynamic number insertion (DNI). Calls route to any team member, office location, or call center you choose. You get full visibility into which campaigns generate real conversations, not just clicks.
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