My whole family knows I'm an atheist. I speak about my atheist activities about as often as they speak about what's going on in the Catholic community. We all respect each others views. The only person to have a conniption when I came out as a non-believer was my mother. It took about a year, but she eventually got over it.
"The world is my country; all of humanity are my brethren; and to do good deeds is my religion." (Thomas Paine)