United States is a country of North America
with a surface area of 9,629,048 km² (density of 32.53 inhab./km²). The population of United States is 313,232,044 inhabitants in the last census.The capital of United States is the city of Washington D.C. which has 601,723 inhabitants. The president of the federal presidential constitutional republic is Donald Trump.
List of current heads of state and government