HOUSTON, Texas (KTRK) -- July 13, or 7/13, marks a numerically coincidental day in Houston. When area codes first came to North America in 1947, Texas was designated for four sets of codes. Houston ...

Happy 713 Day, Houston. It's an unofficial holiday that most Houstonians probably don't celebrate the way they should. OK, it's not a real holiday but since July 13 lines up with Houston's favorite ...

The area code 713 is synonymous with Houston, so much so that Houstonians in the know celebrate the unofficial, annual holiday, on which city residents embrace the local culture while hopefully ...

Sunday is July 13, which is also known as 713 Day here in Houston. It's a day to celebrate all things that are Houston. The day is named after the city's oldest area code, and here's a little history.

There will soon be a new way to identify a Houstonian. For the first time in a decade, a new area code will be distributed in the Houston area in January. The new area code, 621, will join 713, 281, ...

HOUSTON — To the rest of the world, July 13 is just another day. But for Houstonians, the day is an unofficial holiday that we call "713 Day." For those not from Houston, let us educate you a little ...

HOUSTON, Texas (KTRK) -- Houston, if you were just getting used to the 713 area code, we have news for you. New phone lines will soon start getting a 621 number. The Public Utility Commission of Texas ...