French Guiana is an overseas department/region and single territorial collectivity of France on the northern Atlantic coast of South America in the Guianas. French Guiana is the second-largest region of France and the largest outermost region within the European Union. 

As per the World Population Prospects, 2019 by the United Nations, the population of  French Guiana in 2020 is 314,169 

Source: World Population Prospects 2019