Understanding and mapping population density is important. Population density is the average number of people per unit, usually miles or kilometers, of land area. This has resulted in an increase in population density for these cities, which are now forced to expand in order to accommodate the growing population.
Job opportunities in large cities have caused an influx of people to these already packed locations.
13,850,000 Jews (0.2%), four-fifths of which live in two countries: United States (41%) and Israel (41%).In the last century, the global population has increased by billions of people.Jainism, Shintoism, Sikhism, Tenrikyo, Wicca, Zoroastrianism and many others. 405,120,000 Folk Religionists (6%): faiths that are closely associated with a particular.
Wonder how big was the world's population when you were born?Ĭheck out this simple wizard or this more elaborated one to find out. Because of declining growth rates, it will now take over 200 years to double again.In 1970, there were roughly half as many people in the world as there are now.During the 20th century alone, the population in the world has grown from 1.65 billion to 6 billion.it grew to 200 million (some estimate 300 million or even 600, suggesting how imprecise population estimates of early historical periods can be), with a growth rate of under 0.05% per year.Ī tremendous change occurred with the industrial revolution: whereas it had taken all of human history until around 1800 for world population to reach one billion, the second billion was achieved in only 130 years (1930), the third billion in 30 years (1960), the fourth billion in 15 years (1974), and the fifth billion in only 13 years (1987). View the full tabulated data.Īt the dawn of agriculture, about 8000 B.C., the population of the world was approximately 5 million. The chart above illustrates how world population has changed throughout history.