Are you a demographer?

Last update : 2022

Question number 1

Hom many people live on planet Earth?

Choose an answer

1 About 8 million

2 About 8 billion

3 About 800 billion

The right answer is no.2 :

The world population is around 8 billion in 2022

Question number 2

The world population

Choose an answer

1 is increasing

2 is stable

3 is decreasing

The right answer is no.1 :

The world population is increasing at a rate 0.8% in 2022, which represents an additional 67 million people this year.

Question number 3

What is the most densely populated continent ?

Choose an answer

1 Europe

2 Africa

3 Asia

The right answer is no.3 :

Asia has long been the most densely populated continent (In 2019, 60% of the world’s inhabitants live in Asia, ie 4.6 billion)

Question number 4

Human length of life

Choose an answer

1 is increasing

2 is stable

3 is decreasing

The right answer is no.1 :

In 2022, length of life is 71,7 years on average across the world. It has risen sharply over the last century (it was around 35 years in 1900 and 46 years in 1950).

Question number 5

For every 1,000 babies born in the world, how many die before age 1 ?

Choose an answer

1 280

2 28

3 2.8

The right answer is no.2 :

In 2022,for every 1,000 babies born, 28 die before reaching their first birthday (one on 36). This is a world average, and there are big differences from one continent to another: 44 per thousand in Africa compared with 5 per thousand in North America.

Question number 6

Which continent has the lowest population density ?

Choose an answer

1 Asia

2 Africa

3 Oceania

The right answer is no.3 :

Population density is lowest in Oceania, with 5 inhabitants per square kilometre(km²) in 2022, compared with 48 inhabitants per km² in Africa and 151 inhabitants per km² in Asia.

Question number 7

Across the world, women are having

Choose an answer

1 fewer and fewer children

2 more and more children

3 the same number of children

The right answer is no.1 :

Fertility decreased from 5 children per woman on average in 1950 to just under 2.3 in 2022.

Question number 8

The world population is

Choose an answer

1 getting younger

2 stable in terms of average age

3 getting older

The right answer is no.3 :

The world population is ageing, the proportion of old people is increasing and that of young people is failing.

Question number 9

What is the world’s most populated country ?

Choose an answer

1 India

2 China

3 United States

The right answer is no.2 :

According to UN, China, with 1.42 billion inhabitants in 2022 is the world’s most populated country, followed by India with 1.41 billion inhabitants

Question number 10

On what continent is population increasing most quicky ?

Choose an answer

1 Asia

2 Africa

3 South America

The right answer is no.2 :

In 2022,the population is expected to increase by 2.2% each year in Africa, compared with 0.7% in South America and 0.6% in Asia.

To improve your score, look in the "All about population" pages on our website.

Question number 1

What is the world’s most populated city ?

Choose an answer

1 New York

2 Toyko

3 Mexico City

The right answer is no.2 :

According to UN, Tokyo, with an urban agglomeration totalling 37 million inhabitants in 2020 is the world’s biggest city.

Question number 2

What is likely to be the world’s most populated country in 2050 ?

Choose an answer

1 China

2 India

3 Brazil

The right answer is no.2 :

Under the United Nations medium projection, India will be the world’s most populated country in 2050, with almost 1.7 billion inhabitants, ahead of China with 1.3 billion and Brazil with 231 million.

Question number 3

How many babies are born in the world every second ?

Choose an answer

1 1

2 4

3 40

The right answer is no.2 :

In the world, a few more than 4 babies per second have been born

Question number 4

In the world, what is the ratio of boys to girls among newborns ?

Choose an answer

1 boys outnumber girls

2 as many girls as boys

3 girls outnumber boys

The right answer is no.1 :

More boys are born than girls.In 2022,the ratio is 106 boys for 100 girls.

Question number 5

What country has the highest life expectancy ?

Choose an answer

1 Switzerland

2 United States

3 Japan

The right answer is no.3 :

In 2022, in Japan, life expectancy at birth is 84.4 years, compared with 84,3 years in Switzerland and 78.2 years in the United States.

Question number 6

Which of these countries is most densely populated ?

Choose an answer

1 The Netherlands

2 Canada

3 India

The right answer is no.1 :

The population density of a country is expressed as a number of inhabitants per unit of surface area. The population of the Netherlands is much smaller than that of India, but because it is smaller in size, the population density is higher : 522 inhabitants per km² in 2022 versus 477 in India. The population density of Canada in 2022 is 4 inhabitants per km².

Question number 7

By how much does the world population increase each year ?

Choose an answer

1 6.7 million

2 67 million

3 670 million

The right answer is no.2 :

The world population is expected to increase by 67 million inhabitants (0.8%) in 2022.

Question number 8

What percentage of the world population is urban ?

Choose an answer

1 Below 50%

2 50%

3 Above 50%

The right answer is no.3 :

More than half the world’s inhabitants live in a town or city (57% in 2022) up from just 30% in 1950. It is expected to increase to 68% by 2050.

Question number 9

Who live longer, men or women ?

Choose an answer

1 men

2 women

3 no difference between men and women

The right answer is no.2 :

Women, in 2022, they lived 74.4 years on average, compared with 69.1 years for men.

Question number 10

What proportion of the world population lives in Africa ?

Choose an answer

1 1 inhabitant in 6

2 1 inhabitant in 12

3 1 inhabitant in 18

The right answer is no.1 :

In 2022, Africa is home to one in six people, or 18% of the world’s population. According to United Nations average projections, it will have 38 per cent of the population by 2100, or two out of five inhabitants

To improve your score, look in the "All about population" pages on our website.

Question number 1

What are the world’s three most populated countries, in order, in 2022?

Choose an answer

1 China, India, United States

2 India, China, United States

3 China, United States, India

The right answer is no.1 :

According to the UN,China is the world’s most populated country, with just over 1.425 billion inhabitants, just ahead of India with more than 1.417 billion. The United States are fare behind, with slightly more than 338 million inhabitants.

Question number 2

How many cities in the world had more than 10 million inhabitants in 2018?

Choose an answer

1 24

2 34

3 44

The right answer is no.2 :

According to the United Nations, there were 34 urban agglomerations with more than 10 millions inhabitants in 2022. There were only 11 in 1990.

Question number 3

In the world population, what is the ratio of males to females ?

Choose an answer

1 more males than females

2 the same number of males and females

3 more females than males

The right answer is no.1 :

Men slightly outnumber women (101 males for 100 females in the world in 2022). More boys than girls are born (106 boys per 100 girls). The proportion then decreases with age because boys or men die more than girls or women overall. So there are as many men as women at 50, and more women than men beyond.

Question number 4

How many people die in the world every second ?

Choose an answer

1 2

2 20

3 200

The right answer is no.1 :

Around two people on Earth die every second. Around 184 000 per day and 67 million per year (2022). This represents a little bit more than 8 annual deaths per 1,000 population.

Question number 5

What are the world’s three most populated cities, in order ?

Choose an answer

1 Shanghai, Tokyo and Delhi

2 Tokyo, Delhi and Shanghai

3 Delhi, Mexico and Shanghai

The right answer is no.2 :

They are at first Tokyo, whose agglomeration has 37 million inhabitants in 2020 according to United Nations statistics, then Delhi and Shanghai, with respectively 30 and 27 millions.

Question number 6

In the world, the population aged under 15 represents :

Choose an answer

1 almost one person in four

2 almost one person in five

3 almost one person in ten

The right answer is no.1 :

There are 2 billion under-15s in the world, which is almost 25% of the 8 billion total inhabitants (in 2022).

Question number 7

In which of these countries is life expectancy shortest ?

Choose an answer

1 Bangladesh

2 Ivory Coast

3 Senegal

The right answer is no.2 :

In 2022,according to the United Nations, life expectancy (men and women combined) is 58,9 years in Ivory Coast compared with 67.9 years in Senegal and 73,7 years in Bangladesh

Question number 8

What percentage of the world’s population lives outisde the country where they were born?

Choose an answer

1 4%

2 10%

3 30%

The right answer is no.1 :

In 2020, the number of migrants in the world was about 281 million people, 51 million more than in 2010, 128 million more than in 1990 and more than three times as many as in 1970. As for the proportion of migrants in the world population, it will be 3.6% in 2020.

Question number 9

By how much does the world population increase each day ?

Choose an answer

1 2,000

2 200,000

3 20 million

The right answer is no.2 :

The world population grows by 200,000 every day.

Question number 10

How old was Jeanne Calment, the world’s longest-living woman, when she died ?

Choose an answer

1 102

2 112

3 122

The right answer is no.3 :

Jeanne Calment, a frenchwoman, died in 1997 at the age of 122.

To improve your score, look in the "All about population" pages on our website.