I do not have the exact figures, but I would think that the USA has more Masons than any other country.
I'm must admit that I'm absolutely astonished by that figure. I really had no idea that FreeMasonry was so prevalent in the US.This works out to about 1.2% of the US population.
China does not really outlaw all religion. For example the Roman Catholic Church is present in China, although the state does have a major influence in the church (e.g. the communist party has preserved the right to appoint priests). In Macau and Hong Kong, the Catholic church is allowed much more freedom.They have shut down anything that encourages freedom of assembly and freedom of speach as a threat to the state. Religon is also forbiden so no one would meet the criteria for becoming masons.
He's good like that .BG Nailed it