Loose Lips Sink Ships
My wife knows I have a CCW, but I've never told her when I'm actually carrying, and she's never asked. I'm pretty sure she's not aware that I am.
My wife and I have opposing viewpoints on handgun ownership and the concept of carrying a concealed weapon. She steadfastly refuses to see ANY reason whatsoever for defending herself by killing or injuring someone who is posing an imminent threat to her or me or our kids whereas I do. That's ok, in a paternally protective sense to me; i'm willing protect her if the situation arose.
I've carried too many times to count now while the two of us have been out and about, and she's NEVER said a word about it, so I'm guessing she's either unaware or just resigned to the fact that I'm going to do it whether she likes it or not.
Insofar as others knowing about my CCW, I've told one close friend, a sister and her husband, and that's it. My sister's husband carries, too, so they understand. Once, during a conversation between my sister and my wife, sister told her she was comforted with knowing that her husband carried, but I don't think the admission particularly resonated with my wife.
I've mentioned to a few coworkers that I own guns, and now I sort of wish I hadn't told them. Just too much loose casual conversation that's out of my control, ya know?