We're pretty out now that we live across the country from our families and anyone who lives in or grew up in our hometown.
That being said, we don't make it a point to tell people we're swingers (unless they are close to us or we are interested in swinging with them), but we don't make it a point to hide it either. If anyone looks at our computer, they'll find SLS and Swingersboard have links right at the top of the browser, our calendar that hangs by the door has our dates with people written on it and when we plan to go to a club or meet and greet it gets written on the calendar too. People who look around our apartment would need to be blind not to see any mention of swinging. (I will have to remember to take the calendar down when family comes to visit )
We find that people can usually guess that we swing and/or are open. Nobody that we have talked about it with have been surprised. Apparently there is a vibe that even vanilla people pick up on and we exude it.