The Greater San Antonio Chapter is the Home Chapter for the following counties:

Atascosa, Bandera, Bexar, Colorado, Comal, Dimmit, Edwards, Fayette, Frio, Gillespie, Gonzalez, Guadalupe, Kendall, Kerr, Kimble, Kinney, La Salle, Lavaca, Mason, Maverick, Medina, Menard, Real, Uvalde, Val Verde, Wilson, Zavala