The 281/346/713/832 overlay region is all of Greater Houston. Other Texas area code overlay regions include 512/737 (Austin), 430/903 (Northeastern Texas), 682/817 (western Dallas-Fort Worth ...
Rapid growth soon prompted the state to remove the boundary between the 713 and 281 codes and to add the 832 code. That’s when area residents began using 10-digit dialing for local calls. In ...