For the first time in 10 years, a new area code is being added to the Houston line-up

Move over 713, 281, 832, and 346… a new area code is in town. The newest addition, 621, is the first area code to be added in 10 years.; Move over 713, 281, 832, and 346… a new area code is in town. The newest addition, 621, is the first area code to be added in 10 years.