I don't think that there are people who know this for sure, he is the founder of the most popular coin - btc but there are so many versions who is he and what country he is from that i don't know whom to believe.
There is many theories about that who it is. Unfortunately, I'm afraid we'll never know who it really is. Revealing now would be too dangerous for him. Many governments are quite angry at him and it would probably end with arrest and many problems.