However, this number does not give a true reflection of the population density since some parts of the world like deserts and high mountains are uninhabitable. However, if the only land area (150 million square miles) is considered, the population density is 50.9 people per square kilometer. Therefore, the world’s population density is about 15 people per square kilometers. The global population is 7.63 billion and the Earth’s total surface area is 510.1 million square kilometers. Table: 5 most densely populated countries in the world. Tuvalu’s population has been rising steadily in the last three decades due to the high birth rate and lower death rate. The island country has a 0.86% population growth rate. With a population of 11,650, Tuvalu is the second-least populated country. All the city-state’s residents are Catholics. The population is mainly composed of religious leaders and members such as priests and laypeople. Vatican City, an enclave of Rome, Italy, is the world’s least populous country with approximately 825 people. These countries are also the world’s smallest countries by land size. The five least populous countries have a total of 77,000 people, almost half that of Guam, the US an unincorporated territory. In fact, it is one of the largest sources of immigrants into the US. Mexico’s population is almost one-third of the US population despite the two countries sharing a land border. Mexico completes the list of ten most populous countries, with 127.6 million people, or 1.7% of the global population. However, between 20, the population grew by close to 2 million people. Russia had 148 million people in 1990, but the population dropped to 146.6 million in 2000 and 142 million in 2010. It is one of the countries in Europe that have experienced a mix of population growth and decline in the last three decades. Russian Federation, the world’s largest country by area, is the 9th populous country with 144.4 million people, or 1.9% of the global population. The country’s population, representing 2.13% of the global population, is almost half the US population. The UN predicts Nigeria will overtake the US as the third-most populous country by 2050.īangladesh is the world’s 8th most populous country, with a population of approximately 163 million people. The Nigerian population growth is driven by a high fertility rate and preference for large families. There are over 85 million more people in the country than Africa’s second-most populous country (Ethiopia with 115 million people). Nigeria is home to about 15.5% of the African population. The main factor contributing to the country’s population growth is immigration from Africa, Europe, and other parts of the world. According to the UN, Brazil’s population will peak at 238 million in 2050. Brazil’s population is approximately 211 million (2.76%), while Nigeria has about 201 million people (2.63%). The UN estimates that the US, alongside eight other countries, will account for half of the global population by 2050.īrazil and Nigeria are the most populous countries in South America and Africa respectively. It has one of the highest immigration rates, with researchers predicting immigrants will account for 36% of the population by 2065. About 90 million people in the US are immigrants and their US-born children. The United States is the world’s third-most populous country, with 328.2 people or 4.3% of the global population. With a 1.2% population growth rate, India could be the first country to host more than 1.5 billion people. It is the 19th most-densely populated country, with about 409 people per square kilometer. India’s population is 1.37 billion, making it the second-most populous country. India and China are the only two countries with a population of over one billion people. China’s population is approximately four times the US population, despite the US having a slightly larger total surface area. In 2000, it accounted for 21% of the global population. The proportion of China’s population to the global population has been shrinking over the years. It accounts for about 18.4% of the world’s population. With 1.4 billion people, China is the world’s most populous country. Five of the ten most populous countries are in Asia, three in the Americas, and one each in Europe and Africa. According to the recent UN estimates, about 47% of the global population, or 3.6 billion people live in five countries.
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