We are out to most of our friends, however we have not told our family.
Most of our friends are either in poly relationships too or are poly-friendly so that was no issue.
I'm pretty sure our families would disapprove though so it's just easier to keep it from them. I'm not ashamed of our lives but don't want to spend the energy defending our choices and lifestyle to people who will likely never understand or approve. It's really none of their business anyway.