Board Thread:Show-Related Questions/@comment-24670104-20150409132406/@comment-25176701-20150409135338

^I know that. That's why I said (after adding up the Grounders and Sky People) "the rest of the people may belong to groups that we haven't seen yet". I think there are other groups of people (not necessarily Grounders, at least not in terms of how they live) in different parts of the world.