North American area code 936 is a state of Texas telephone area code for numbers in the Nacogdoches-Huntsville area, as well as a few outer portions of the Houston metropolitan area. It was created February 19, 2000, in a code-split from area code 409. It primarily serves the Deep East Texas area. Counties served by this area code: Angelina, Brazos, Cherokee, Grimes, Hardin, Harris, Houston, Leon, Liberty, Madison, Montgomery, Nacogdoches, Polk, San Augustine, San Jacinto, Shelby, Trinity, Tyler, Walker, Waller, and Washington Towns and cities served by this area code: