The "White Flight havens" on Houston's periphery have always creeped me out. I tend to think if you want to have 90%+ of your neighbors be non-Hispanic whites, you need to find somewhere other than Houston to live (Utah or Minnesota, perhaps). I'm occasionally in Cypress visiting family friends who are a Santorum-Palin GOP's wet dream: wife never attended college, they go to an evangelical church twice a week, husband collects bumper stickers that are the Right's equivalent of snark ("Somewhere in Kenya, a village is missing its idiot"). And the cookie cutter houses around the cul de sac are full of cookie cutter neighbors; an F-150 and an Expedition in every driveway (preferably with a Browning deer or Semper Fi sticker) and Fox News on every plasma TV.
what's the SES of the area like? The way you're describing them, I'm surprised they can afford to live in that area.