The current world population is 7.8 billion as of January 2020 according to the most recent United Nations estimates elaborated by Worldometers. The term "World Population" refers to the human population (the total number of humans currently living) of the world.
People are naturally going to live near clean water sources, that way it's easier to survive, so people are more likely to live near or in an oasis than in a hot dry area like a desert.
