Maybe a Meetup of like-minded folks? On Meetup.com you can search for groups in your area by subject matter. I don't know your situation, but there are some places where people look at you like you grew a third eye and kicked a kitten if you mention you're an atheist. It can be refreshing to hang out with people who don't think everything is either a miracle or a conspiracy. But you'll have to participate and give it time to work...maybe volunteer to help out in some way so people will have a reason to appreciate your contributions. A lot of atheist-friendly Meetups are involved in charity work.
I'm not anti-Christian. I'm anti-stupid.