713 Area Code

What 713 actually covers

713 is the area code of Greater Houston. Today it is one of five codes laid over the same territory, so the number tells you the region but not the neighbourhood: Houston itself, Pasadena, Baytown, Sugar Land, Katy, Pearland, The Woodlands, Spring, Humble, League City and Galveston can all carry 713, 281, 832, 346 or 621. The overlay complex covers Harris County and reaches into Fort Bend, Montgomery, Brazoria, Galveston, Liberty, Chambers and Waller counties, sharing some of those edges with 936, 979 and 409.

Because everything is overlaid, every local call in Houston is dialled with ten digits and has been since 1999.

There is one useful historical wrinkle. For two and a half years, 713 meant "inside Beltway 8" and 281 meant "the suburbs". That boundary was abolished in 1999, but numbers issued before then still carry it, which is why an older downtown law office or a Texas Medical Center department is more likely to be 713 and a 1997 Katy landline is more likely to be 281.

How 713 got here

• 1947: 713 was one of the original area codes and covered south-east Texas from the Sabine River to the Brazos Valley, far more than Houston.
• November 1996: with cell phones, pagers and fax lines eating the supply, the suburban ring outside Beltway 8 was split off as 281. Houston proper and the suburbs inside the loop kept 713.
• January 1999: 832 was added as an overlay on the entire region and the 713/281 boundary was dropped. From that date any Houston address could receive any of the three codes, and ten-digit dialling became mandatory.
• July 2014: 346 was added as the fourth overlay.
• January 2025: 621 was activated as the fifth, after regulators projected the pool would run out by late 2025.

Five codes on one metro is a sign of how fast Houston has grown, and it also means the area code is a weaker clue here than in Manhattan or Miami. A caller with a 713 number is most likely an older line; a caller with 346 or 621 is almost certainly a recent one. Scam operations, which spoof rather than buy numbers, tend to pick 713 precisely because it reads as the established Houston code.

What a real 713 caller usually looks like

• Landline on an established carrier is the expected result for the Texas Medical Center hospitals, the county and city offices, the courts, the port, the energy companies along I-10 and older residential lines.
• Mobile 713 numbers are common. Houston cell phones were issued 713 for years before the overlays took most new assignments, so a mobile result on its own proves nothing either way.
• VoIP results deserve a second look. Houston has a large base of legitimate business VoIP lines, but VoIP with an unfamiliar reseller is also the standard footprint of spoofed traffic.
• Ported is frequent in Houston because the region has changed codes and because people move within the metro with their numbers.

The line type does not tell you who is calling, but it tells you whether the caller's story holds up. A sheriff's deputy or a utility does not phone from a VoIP reseller.

Scams that use 713 caller IDs

Jury duty and warrant calls from a "deputy". This is the scam Harris County warns about most often. Callers claim to be Harris County Sheriff's Office deputies, quote a badge number, sometimes text a doctored summons, and say the target missed jury duty and must pay a fine, around $525 in recent reports, by gift card or prepaid card to avoid deputies coming to the door. The calls display real sheriff's office numbers. The Sheriff's Office states it never demands cash, bail or fines by phone. Hang up, then call the Sheriff's Office at 713-221-6000 or check jury service with the Harris County District Clerk at 713-755-6392.

CenterPoint disconnection threats. A caller claims to be CenterPoint Energy, says power will be cut within the hour and directs the target to buy a prepaid card and read out the serial number, sometimes routing them to a fake "automated payment line". CenterPoint says it never calls demanding payment to prevent disconnection, never takes prepaid cards, gift cards, cryptocurrency or payment apps, and always mails an overdue notice and a disconnection notice with a date before cutting service. Hang up and call the number on your bill.

Toll road texts and follow-up calls. In early 2025 the Harris County Toll Road Authority fielded thousands of calls about texts claiming unpaid tolls and threatening late fees or licence suspension, with links to a fake payment site. HCTRA does not text about payments or violations. Check your account at 281-875-3279 or on the official site, never through a link in a message.

Medical billing and Medicare calls. With the largest medical complex in the world in the middle of the city, a call "from the billing office" about an outstanding balance or a new Medicare card is plausible in Houston. Real billing departments do not take card numbers on unsolicited calls and never ask for a one-time code.

Storm and repair follow-ups. After every hurricane and freeze, calls arrive offering roof or fence repair, generator installation or "FEMA assistance" for an upfront fee or a Social Security number. Government disaster aid never requires payment to apply, and contractors who cold-call for deposits before inspecting anything are the ones consumer offices warn about.

Neighbour spoofing. Robocall operations display a 713 number sharing your first six digits so the call looks local. The number shown usually belongs to an unrelated Houstonian, which is why some 713 numbers collect reports from people who were never actually called by them.

How to check a 713 number

1. Enter the ten-digit number in the panel at the top of this page. The 713 is already filled in.
2. Compare the line type and carrier with what the caller claimed. Courts, utilities and agencies call from established landlines, not VoIP resellers.
3. Read the risk level and community reports. Several "scam" or "robocall" reports within days of each other mark a live campaign.
4. Still unsure? Unlock the risk details for the fraud score and abuse history, or call the organisation back on the number printed on its official site or your bill.

Where to report a 713 scam call

• Texas Attorney General, Consumer Protection Division: 1-800-621-0508, or the online complaint portal at texasattorneygeneral.gov.
• Harris County Sheriff's Office: 713-221-6000 for deputy impersonation and warrant scams.
• Harris County District Clerk: 713-755-6392 to check whether you were ever summoned for jury duty.
• Better Business Bureau of Greater Houston: 713-868-9500, or the BBB Scam Tracker online.
• Federal Trade Commission: reportfraud.ftc.gov. Reports feed the complaint data carriers use to block robocallers.
• CallerTracer: report the number on the Who Called Me page or straight from a lookup result. It shows on this page and on every lookup of that number within minutes.

Frequently asked questions

Is 713 Houston or the suburbs?

Both, since 1999. 713 was limited to inside Beltway 8 between 1996 and 1999, but it is now an overlay across the whole metro along with 281, 832, 346 and 621. An older inside-the-loop line is still more likely to be 713.

Are new 713 numbers still issued?

Rarely. Carriers assign from whichever code has numbers available, and since 2014 most new Houston lines have come out as 346, and since 2025 increasingly 621.

Does a 713 number mean the caller is in Houston?

Only that the number was issued there. Mobile and VoIP numbers move with their owners, and a spoofed call can show any number at all. Use the carrier and line type from a lookup, not the area code, to judge where a call came from.

What time zone is 713?

Central Time, with daylight saving from March to November. The clock at the top of this page shows the current time in Houston.

Which area codes are next to 713?

281, 832, 346 and 621 cover the same area. 409 is Beaumont and the Gulf coast to the east, 936 is Huntsville and the piney woods to the north, and 979 is Brazos Valley and the coast to the south-west.