If a call from the 713 area code just showed up on your phone, you're hearing from the heart of Houston — one of the four original area codes assigned to Texas when nationwide dialing began, and today the anchor of one of the most heavily overlaid regions in the country.
This guide covers everything worth knowing about the 713 area code: where it's located, which cities and neighborhoods it covers, what time zone it runs on, the overlays that now share its territory, the scam patterns to watch for, and how to get a local 713 number if you're opening a business or expanding into Houston.
The 713 area code covers core Houston, roughly the area inside and just beyond the 610 Loop. It's one of the most business-dense area codes in Texas, home to the city's downtown financial district, the Texas Medical Center, and a major energy sector headquarters cluster.
Major neighborhoods and districts in the 713 area code include:
Geographically, the 713 numbering plan area sits at the center of a much larger overlay complex that now stretches across the entire Houston metro area.
The 713 area code went into service as one of only four original area codes assigned to Texas when the North American Numbering Plan was created. It originally covered the entire southeastern quadrant of the state, from the Sabine River to the Brazos Valley.
Because 713, 281, 832, 346, and 621 all now share the same territory, every call in the region — even between two neighbors calling each other in the same Houston zip code — requires the full area code plus the seven-digit number, a rule that's been in place since the 832 overlay went live.
The entire 713 area code sits in the Central Time Zone, observing:
That means a 713 number keeps the same business hours as Dallas, Chicago, and the rest of the Central time region — helpful to keep in mind when coordinating with East Coast or West Coast teams.
Area code 713 itself is completely legitimate — it's simply the dialing code for the historic core of Houston. But like most active area codes, it's frequently spoofed by scammers who fake a local caller ID so residents are more likely to answer a call that looks like it's coming from their own neighborhood.
Common scams reported against 713 numbers include:
If you receive a suspicious call from a 713 number, don't share personal or financial information, hang up on any recorded message demanding immediate payment, and report the call to the Federal Trade Commission. The area code isn't the problem — caller ID spoofing simply makes it easy for bad actors to borrow it.
If you want a 713 number for personal or business use, the fastest option today is a cloud business phone platform. With a provider like Softtop, getting a 713 number takes just a few steps:
Because Softtop provisions numbers instantly and supports number porting with zero port-out fees, you can also move an existing 713 number onto the platform in five to ten business days if you're switching providers rather than starting fresh.
On Softtop, every 713 number is backed by the same tools used across the platform: an AI Receptionist that answers every call in under a second, full call recording and transcription, CRM sync with HubSpot and Salesforce, and 99.999% uptime backed by an SLA.
The 713 area code has anchored Houston since the earliest days of nationwide dialing, when it was one of only four area codes covering the entire state of Texas. It's since given up territory to form 409 and 281, had its own boundary erased to make room for 832, and been layered with two more overlays — making it the origin point of one of the most complex numbering regions in the country.
Like any widely used area code, 713 is also a target for caller ID spoofing, so a little healthy skepticism toward unexpected calls goes a long way. And if your business wants to build a genuine local presence in Houston, getting a number no longer requires a physical office or a new phone line — a cloud platform can have you calling, texting, and answering customers as a local business within minutes.