Michael Hamilton Inc (281) 367-8996
The main area code, 713, was one of the original area codes established in October 1947. It originally covered the entire southeastern quadrant of Texas, from Galveston to the Brazos Valley. On March 19, 1983, the area was divided for the first time. The immediate Houston area retained 713 while the northern, eastern and western portions of the old 713 territory became 409. On November 2, 1996, the 713 area was split again, with most of Houston's suburbs switching to area code 281. The dividing line roughly followed Beltway 8. Generally, Houston itself and most of the suburbs inside the beltway kept 713, while everything outside it became 281. 713 was retained by all cellphone customers in the Houston area.
This was intended as a long-term solution, but within two years both 281 and 713 were close to exhaustion due to Houston's rapid growth and the proliferation of cell phones and pagers. On January 16, 1999, area code 832 was created as an overlay for the entire Houston area. At the same time, 281 was also turned into an overlay for the entire region, effectively erasing the 713-281 boundary. The result was three area codes covering the Houston metro area, with ten-digit dialing required for all calls.
Harris County - Population 455,761