Yeah my family knows. But where I live the whole religion thing is not as big as a deal as it seems to be in the USA, people are waaaay more relaxed about it (with exception of our own bible belt).
When I was a Christian, I was annoyed with dogmatic condescending Christians. Now that I'm an atheist, I'm annoyed with dogmatic condescending atheists. Just goes to prove that people are the same, regardless of what they do or don't believe.