The largest island in the world is Greenland with a total area of 840,004 sq. miles or 2,175,600 sq. kilometers. Since it is an arctic island, the majority of Greenland’s land mass is covered by ice. The capital of Greenland is Nuuk, whose population accounts for about 25% of the total population of the island – mainly Inuit and a mixture of Inuit and Danish. Greenland is part of the Kingdom of Denmark, and by including Greenland, Denmark is actually one of the largest countries in the world.