Please Click "Follow" at the Top Corner of this article. According to Statistics,There are 195 countries in the world today, and over 7 Billion people in the world. It will be difficult to believe, that there are some country in this world smaller than a Secondary School, yes, they Exist. Vatican, Considered as the smallest sovereign state in the world by both area and population. Vatican City is the smallest country in the world, measuring just 0.2 square miles, almost 120 times smaller than the island of Manhattan.