There are more than 223 counteies in the world in which lives about 7.18 billion people. But the distributoion of the world population is not uniform. Some areas are densly populated, some are less populated and some are modrately populated. 60.70% population lives in Asia, 14.57% in Africa, 10.82% in Europe including Russia, 7.74% in North America, 5.64% in South America and 0.53% in Australia.