Population density of Europe D 10. 4 million square kilometers 6th biggest continent In 1800, 170 million people a In 2005, 726 million people a 1st place among all the continentsPopulation density of Europe  10.4 million square kilometers, 6th biggest continent  In 1800, 170 million people  In 2005, 726 million people  1st place among all the continents