### 10 most populated countries in the world

It's World Population Day today and we take a look at 2018's most populated countries

In celebration of World Population Day, we look at the 10 most populated countries in the world. The global human population grows by around 75 million every year. In the year 1800 the world population was 1 billion, this year, we are at to 7.6 billion people as of July, 2018.The population is expected to keep growing, and estimates to reach 8.4 billion by 2030, and 9.6 billion by 2050.

Here is your list of the world's most populated countries.

### 1. China

Population: 1,415,171,198 (Last year: 1,379,302,771)

The population of China is equivalent to 18.54 per cent of the total world population and they are ranked number 1 in the list of countries by population. There are roughly around 151 people per square kilometre. The median age in China is 37.3 years.

### 2. India

Population: 1,354,464,444 (Last year: 1,281,935,911)

India population is equivalent to 17.74 per cent of the total world population and it is ranked number two. The population density in India is more than double that of china at 455 people per square kilometre. The median age in India is 27 years.

### 3. United States

Population: 326,830,645 (Last year: 326,625,791)

The United States population is jumps down from its predecessor to 4.28 per cent of the total world population. The population density in the United States is a much smaller 36 people per square kilometre. The median age in the United States is 37.8 years.

### 4. Indonesia

Population: 266,872,775 (Last Year: 260,580,739)

Indonesia population is equivalent to 3.5 per cent of the total world population and ranks at number four. The population density in Indonesia is 147 people per square kilometre. The median age in Indonesia is a young 28.3 years.

### 5. Brazil

Population: 266,872,775 (Last Year: 207,353,391)

Brazil population is equivalent to 2.76 per cent of the total world population.

Brazil ranks number 5 in the list of countries by population and has a population density in Brazil is 25 people per square kilometre. The median age in Brazil is 31.7 years.

### 6. Pakistan

Population: 200,919,769 (Last Year: 204,924,861)

The population of Pakistan is equivalent to 2.63 per cent of the total world population and it is ranked at number 6 in the list of countries by population.

The density in Pakistan is 260 people per square kilometre. The median age in Pakistan is 22.7 years.

### 7. Nigeria

Population: 196,014,916 (Last Year: 190,632,261)

Nigeria population is equivalent to 2.57 per cent of the total world population. The population density in Nigeria is 215 people per square kilometre. The median age in Nigeria is 17.9 years.

### 8. Bangladesh

Population: 166,415,337 (Last Year: 157,826,578)

Bangladesh population is equivalent to 2.18 per cent of the total world population. The population density in Bangladesh is a whopping 1,278 people per square kilometre. The median age in Bangladesh is 26.0 years.

### 9. Russia

Population: 143,964,017 (Last Year: 142,257,519)

The Russian population is equivalent to 1.89 per cent of the total world population. The population density in Russia is just 9 people per square kilometre. The median age in Russia is 38.9 years.

### 10. Mexico

Population: 130,803,510 (Last Year: 129,163,276)

Mexico population is equivalent to 1.71 per cent of the total world population. The population density in Mexico is 67 people per square kilometre. The median age in Mexico is 27.9 years.

*Source: Census.gov*

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