Houston’s first area code, 713, was established in 1947 as one of Texas’ original four area codes. In 1996, the 713 area was divided, assigning most suburbs in the region to the 281 area code.

The Public Utility Commission said back in October 2023 that we'd be getting a 5th area code to join the existing 281, 346, 713, and 832 line-up. It won't affect existing numbers. The 621 code ...