What is the average density of population in world?
What is the average density of population in world?
51 persons per square km
The average density of population in the whole world is 51 persons per square km. Population density is the number of people living in a unit area of the earth’s surface. It is normally expressed as per square km.
When did Earth’s population reach 7.5 billion?
June 13, 2018
The U.S. Census Bureau’s International Data Base estimated that the world population reached 7.5 billion on June 13, 2018 and will reach 8 billion in 2025.
What was the world’s population 10000 years ago?
Some estimates extend their timeline into deep prehistory, to “10,000 BC”, i.e., the early Holocene, when world population estimates range roughly between 1 and 10 million (with an uncertainty of up to an order of magnitude).
What percentage of the world’s population lives in the developing world?
In 2017, 9 percent of the global population was under age 5. Young people ages 10–24 account for about 1.8 billion of the world’s population. Ninety percent of them live in developing countries. Children under 15 years of age represent roughly one quarter of the world’s inhabitants (26 per cent).
How many people is 80 percent of the world?
Changes to its methodology have allowed the UN Population Division (UNPD) to project an 80 percent probability that the world’s population will be between 9.6 and 12.3 billion by 2100.
What is the current world population?
The current world population is 7.8 billion as of January 2020 according to the most recent United Nations estimates elaborated by Worldometer.
What are the 10 most populous countries in the world?
China. The skyline of Hong Kong.
When was the world population 4 billion?
Thereafter, the global population reached four billion in 1974, five billion in 1987, six billion in 1999 and, by some estimates, seven billion in October 2011 with other estimates being in March 2012. It is projected to reach eight billion by 2024–2030.
What is the world population growth rate?
The World’s Growth Rate. The world’s current (overall as well as natural) growth rate is about 1.14%, representing a doubling time of 61 years. We can expect the world’s population of 6.5 billion to become 13 billion by 2067 if current growth continues.
