My wife plays. My immediate family knows. My wife's parents, sister, and sister's husband know. I'm pretty sure my aunts and uncles suspect. My wife's extended family knows...they don't understand it, but they don't really care. Which surprised me. Lancaster and Lebanon counties aren't exactly known for their progressive mindsets.
My Coworkers don't know. Well, one of them does. She asked if I had plans for the weekend shortly after started at my current job and I said yes, that I had my monthly game night. She asked what games. I said, "I'm a huge geek. I run a regular D&D game." She didn't bat an eye. I don't hide it from my coworkers, but I don't make a point of bringing it up either. Even though I work in IT, for a small liberal arts college. A pretty "open" environment, if there ever was one. (Though, to be fair, it is in the heart of a pretty conservative farming/rural Pennsylvania community.)
I don't hide it. But it's not like I walk around holding my PHB up in the air like some kind of shining light to the uninitiated, either. Though, I'd *love* too.
Now, Facebook on the other hand? I routinely make status updates referencing my gaming - just last Sunday, I posted that my druid had died during a TPK. So, all my friends who didn't exactly *know* I gamed, know I'm a geek. If they want to know more, they're free to ask me. If any of them mind, they haven't unfriended me yet, so I guess they're cool with it.
So, am I in the RPG closet? No. Am I flaunting my gamer status? Also no.