The Greater Houston Chapter is the Home Chapter for the following counties:

Angelina, Austin, Brazoria, Chambers, Fort Bend, Galveston, Grime, Hardin, Harris, Jasper, Jefferson, Liberty, Matagorda, Nacogdoches, Newton, Orange, Polk, Sabine, San Augustine, San Jacinto, Shelby, Trinity, Tyler, Walker, Waller, Washington, and Wharton