San Antonio (1)
Houston (1)
Dallas (3)
Austin (3)
I think I'm right on the numbers, but I've definitely only seen them in Texas.
UPDATED
Austin, TX (4)
Dallas, TX (1)
Grand Prairie, TX (3)
Houston, TX (1)
San Antonio, TX (2)
Let's redo this list, shall we?
World TourbulenceAug 17, 2002--Austin Music Hall, Austin TX (King's X/Dream Theater/Joe Satriani)
Chaos in MotionAug 02, 2007--Nokia Live Theater, Grand Prairie TX
Aug 03, 2007--Verizon Wireless Theater, Houston TX
Aug 04, 2007--The Backyard, Austin TX
Final FrontierJune 12, 2010--AT&T Center, San Antonio TX (Dream Theater/Iron Maiden)
A Dramatic Tour of EventsOct 26, 2011--Bass Concert Hall, Austin TX
Oct 27, 2011--Verizon Theater, Grand Prairie, TX
July 06, 2012--Majestic Theater, San Antonio TX
July 07, 2012--ACL Live, Austin TX
July 09, 2012--Verizon Theater, Grand Prairie, TX
The AstonishingMay 07, 2016--The Wiltern Theater, Los Angeles CA