713 has been Houston’s number since 1947, one of the original area codes, and the one Houstonians still claim with some pride even though the city now juggles four (713, 281, 832, and 346 all overlay the same sprawl). Our data shows 713 prefixes registered across Houston proper, the suburban ring, Spring, Baytown, and Richmond-Rosenberg.
Four codes, one city
Houston went to full overlay years ago, which means ten-digit dialing and zero geographic meaning between the four codes, a 281 number isn’t “more suburban” than a 713 anymore. In practice, older businesses and long-time residents hold 713 numbers, and newer lines land on 832 or 346.
The Houston call-spam economy
Energy bills are the big lever here. Texas’s deregulated electricity market spawns endless “switch your provider” calls, some legitimate, many not, and after every hurricane or freeze, contractor and roofing scams surge through Houston area codes within days. We also see oil-and-gas job scams (fake offshore gigs with an upfront “certification fee”) that specifically exploit the region’s industry.
Our 713 directory is the quick filter: registered location, carrier, and what other Houstonians already reported. Storm-chaser contractors tend to light up with reports within a week of any weather event.
Rule of thumb
Anyone who calls you first and asks for money, codes, or a signature “today only” gets looked up before they get an answer. That single habit filters out most of what’s wrong with the phone in 2026.