In my experience, free market thought is almost always coincided with atheist thought. But at lewrockwell.org as well as in the introduction thread here on the mises forum, I find quite a few people who are Christian and anarchist. Although I do recognize that they are a vastly different creed of Christians, they are still Christians.
Let me quote Joseph Campbell on this:
The above quote intends to show that both theism (metaphors are facts) as well as the reactionary position of atheism (those facts are not facts and thus lies) are not quite getting it. It introduces the idea that metaphors are in fact metaphors and their function is to penetrate us to the mystery. Could it be that the Christian anarchists are actually metaphorical Christians, or do you believe that God, Jesus, Satan, heaven, hell, etc. are facts; and not to be confused with metaphors. Because if that is the case then I think we have a problem on our hands, because the purpose of knowledge is to understand, describe, explain and predict reality, which religious speak - as facts - do not do.