Officially called the Principality of Monaco, Monaco is the world’s most densely populated country and second-smallest independent nation; with a population of just 38,499 and an area of 1.96 square kilometers (485 acres). The population density in Monaco is 25,970 per Km2 (67,261 people per mi2).
With a total population density of over 8155 people per square kilometer, Singapore is a highly populated island nation located on the southern tip of the Malay Peninsula. The current population of Singapore is 5,749,283 as of Wednesday, December 27, 2017, based on the latest United Nations estimates.
3 Vatican City
With only 0.44 squared kilometers, Vatican City is the world's smallest country by land area. It has a population estimated as just 826, all of whom live inside the Vatican’s walls. That gives us an impressive population density of 4,935 people/mi2. Vatican City is governed as an absolute monarchy with the pope at its head.
Coming 4th in our list is Bahrain. Located in a gulf between Qatar and Saudi Arabia, Bahrain is the smallest among the Arabian countries. An estimated population of 1.5 million people means that Bahrain has a density of around 1,964 people per square km. The total land area is 760 Km2 (293 sq. miles)
Maldives is a South Asian island country, located in the Indian Ocean. The Maldives is the smallest Muslim country in the world and The Maldives is the smallest Muslim country in the world and is famous for its beaches, sea foods, refreshing environment and amazing sights. The total land area is 300 km2 (116 sq. miles) and the current population of Maldives is 440,184 as of Wednesday, December 27, 2017, based on the latest United Nations estimates. The population density in Maldives is 1454 per Km2 (3,767 people per mi2).