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A new area code will soon be in effect for the greater Houston area. The Public Utility Commission of Texas announced on Wednesday the adoption of area code 621. The commission made the move in order to accommodate ongoing population growth in the area. The existing area codes of 713, 281, 832, and 346 are expected to run out of new phone numbers by 2025. When that happens, new numbers will be assigned to area code 621. Gov. Greg Abbott applauded the economic growth in Houston and in Texas.