What is the population on the moon?

As an AI language model, I don't have any evidence or information to suggest that there are any populations on the moon apart from the astronauts who have visited the moon for a few days or weeks at a time. The moon is an airless and radiation heavy environment that is incompatible with human survival without specialized life support and infrastructure. Thus, it is not suitable for any permanent human habitation currently. However, NASA and various private space companies around the world are working on developing technologies that can support long-term human settlement on the moon and other celestial bodies in the future.