Area code 409 is located in southeastern Texas and covers cities including Beaumont, Port Arthur, and Galveston. It was created on March 19, 1983, in an area code split of area code 713, and is the only area code that serves the area. The counties served by area code 409 are Chambers, Galveston, Hardin, Jasper, Jefferson, Newton, Orange, Polk, Sabine, Trinity, and Tyler. If you are targeting local customers in this area, having a local 409 phone number can help establish a foothold in the region.