Which country is the most densely populated?

Monaco, the tiny principality on the French Riviera, is the most densely populated sovereign country on Earth, packing over 18,000 people into each square kilometre within an area of just about 2 square kilometres. Its population of roughly 38,000 is squeezed onto steep coastline, which is why the city-state has expanded by building upward and reclaiming land from the sea. Among larger nations, Singapore and Bangladesh rank as some of the most crowded. The territory of Macau, a special administrative region of China, is even denser than Monaco but is not an independent country.