Other than Chic-Fil-a, and Hobby Lobby, I can recall any other retail businesses that are closed on Sunday's. Those two are closed on Sunday's throughout the US, not just Atascocita. It's part of their business model.
I do know that other places open later and close earlier on Sunday, (like the mall) but that's not exclusive to this area either.
What other places have you come across that weren't open on Sunday?