World population

World population - is the total number of humans currently living in the World. As of today, the total population of the world is around 7.7 billion people . The first billion was reached around 1800 and in just 200 years we reached 7 billion.

According to Population Division of United Nations Department of Economic and Social Affairs , these are the main milestones:

• 1 billion - 1804
• 2 billion - 1927 (in 123 years)
• 3 billion - 1960 (in 33 years)
• 4 billion - 1974 (in 14 years)
• 5 billion - 1987 (in 13 years)
• 6 billion - October 12, 1999 (in 12 years)
• 7 billion - October 31, 2011 (in 12 years)

Currently, the world population is increasing by more than 90 million per year.
The Global sex ratio is 1.018 It means that we have slightly more men then women.The median age of the world's population was estimated to be 30.4 years in 2018 .

More than 70% of the world population live in 20 most populous countries of the world. There are just 2 countries in the world with a population more than 1 billion people: China and India. Despite the fact that China is curently the most populous country in the world, India's population growths much faster. And in 2023 India is expected to become the most populous country in the world.

Top 20 most populous countries (23-04-2019)

1		China	1,403,514,494	18.23%
2		India	1,375,341,358	17.87%
3		United States of America (USA)	331,140,925	4.30%
4		Indonesia	270,405,781	3.51%
5		Brazil	215,198,846	2.80%
6		Pakistan	204,528,260	2.66%
7		Nigeria	201,440,579	2.62%
8		Bangladesh	168,475,799	2.19%
9		Russian Federation	146,528,496	1.90%
10		Mexico	133,809,625	1.74%
11		Japan	126,041,477	1.64%
12		Ethiopia	109,335,735	1.42%
13		Philippines	106,905,486	1.39%
14		Egypt	99,369,884	1.29%
15		Vietnam	97,503,392	1.27%
16		Democratic Republic of the Congo	87,002,791	1.13%
17		Turkey	83,921,073	1.09%
18		Iran	83,005,558	1.08%
19		Germany	81,418,084	1.06%
20		Thailand	68,951,209	0.90%

This list includes 20 most populous countries in the World. Approximately 5.39 billion people live in these twenty countries, or around 70.07% of the world's population.

World population 2019

The population of the world is projected to increased by 93,926,223 people in 2019 and reach 7,763,035,301 in the end of the year. The natural increase is expected to be positive, as the number of births will exceed the number of deaths by 93,501,640.

Population change rates in 2019

According to our estimations, daily change rates of world population in 2019 will be the following:

• 420,698 live births average per day (17,529.07 in an hour)
• 164,529 deaths average per day (6,855.37 in an hour)

The population of World will be increased by 257,332 persons daily in 2019.

Demographics of the World 2018

As of 1 January 2019, the population of the world was estimated to be 7,669,109,078. This is an increase of 1.22 % (92,157,693 people) compared to population of 7,576,951,385 the year before. In 2018 the natural increase was positive, as the number of births exceeded the number of deaths by 91,812,002.

Below are the key figures for the world population in 2018:

• 151,141,033 live births
• 59,329,031 deaths
• 3,868,358,699 males as of 31 December 2018
• 3,800,750,379 females as of 31 December 2018
• 4,141,318,902 people live in urban areas (54 % of total world population)
• 3,527,790,176 people live in rural areas (46 % of total world population)

World population density

The world population density is 56.3 people per square kilometer (145.9 per mi²) as of April 2019. This number is calculated using 7,669,109,078 people as the world population and 136,120,354 km² (52,556,368 mi²)as Earth's total area. This is the sum of land and water areas within international boundaries and coastlines of all the countries in the world.

Since the Earth's total area is about 510 million square kilometers, the world population density can be calculated in several ways:

• 15.0 people/km² (38.9/mi²) - the Earth's total area (including land and water) is 510,072,000 km² (196,939,921 mi²).
• 51.0 people/km² (132.0/mi²) - the Earth's land area. This includes all continental and island land area as well as Antarctica. The area in that case is 150,461,685 km² (58,093,588 mi²).
• 56.3 people/km² (145.9/mi²) - sum of land and water areas within international boundaries and coastlines of all the countries in the world. The area in that case is 136,120,354 km² (52,556,368 mi²).

See also:

List of countries by surface area and density by United Nations Statistics Division
Map and list of the world by density of population at worldstat.info

Religion of the World

Religion	Number of followers	Percentage of total population
Christianity	2,437,902,539	31.8 %
Islam	1,870,611,540	24.4 %
Religiously Unaffiliated	1,180,959,530	15.4 %
Hinduism	1,152,355,870	15.0 %
Buddhism	513,195,490	6.7 %
Folk or traditional religions	433,776,160	5.7 %
Other	65,602,796	0.9 %
Judaism	14,705,153	0.2 %

Source: Pew Research Center. The Global Religious Landscape .

Number of followers estimated by Countrymeters ( January 1 2019).

Global age structure

As of the beginning of 2019 according to our estimates the world had the following population age distribution:

25.3

62.6

7.4

	- percentage of population under 15
	- percentage of population between 15 and 64 years old
	- percentage of population 65+

In absolute figures (estimate):

• 1,942,216,874 young people under 15 years old ( 1,004,638,355 males / 937,581,437 females)
• 4,802,743,202 persons between 15 and 64 years old ( 2,427,864,967 males / 2,374,897,006 females)
• 565,723,262 persons above 64 years old ( 250,596,060 males / 315,115,888 females)

We prepared a simplified model of the population distribution pyramid which is broken down into 3 main age groups. The groups are the same as we used above: population under 15, between 15 and 64 and population which is over 65 year old.

65+

15-64

0-14

male

female

As we can see the World population pyramid has an expanding type. This type of pyramid is common for developing countries with declining fertility rate but still high birth and death rates.

World life expectancy

Life expectancy at birth is one of the most important demographic indicator. It shows the number of years a newborn infant would live assuming that birth and death rates will remain at the same level during the whole lifetime.

According to Population Division of the Department of Economic and Social Affairs of the United Nations, life expectancy at birth for the world as a whole increased from 65 years in 1990-1995 to 70 years in 2010-2015. Although wide disparities persist such that the average length of life in Africa in 2010-2015, for example, is 12 years shorter than the global average and 21 years shorter than in Northern America - see figure below.

Global literacy

According to our estimates 4,632,812,644 persons or 86.3% of adult population (aged 15 years and above) in the world are able to read and write. Accordingly about 735,661,278 adults are illiterate.

Literacy rate for adult male population is 89.96% (2,409,463,186 persons). 268,997,841 are illiterate.
Literacy rate for adult female population is 82.65% (2,223,349,457 persons). 466,663,437 are illiterate.

Youth literacy rates are 92.81% and 90.13% for males and females accordingly. The overall youth literacy rate is 91.51%. Youth literacy rate definition covers the population between the ages of 15 to 24 years.

Source: The estimation data for section "World population literacy" is based on the latest data published by UNESCO Institute for Statistics (retrieved March 13, 2016) .