2,173,180,000 Christians ( 31% of world population), of which 50% are Catholic, 37% Protestant, 12% Orthodox, and 1% other.Previous MilestonesĪccording to a recent study (based on the 2010 world population of 6.9 billion) by The Pew Forum, there are: Census, the date and time of when 6 billion was reached will probably change because the already uncertain estimates are constantly being updated. Census Bureau instead, the six billion milestone was reached on July 22, 1999, at about 3:49 AM GMT. 6 Billion (1998) According to the latest revision by the United Nations (released in 2022), the 6 billion figure was reached towards the end of 1998 (this was previously estimated as occurring on October 12, 1999, celebrated as the Day of 6 Billion). The US Census Bureau made a lower estimate, for which the 7 billion mark was only reached on March 12, 2012. 7 Billion (2010) According to the latest revision by the United Nations (released in 2022), world population reached 7 Billion in late 2010 (this was previously estimated as occurring on October 31, 2011). World population has reached 8 billion people on Novemaccording to the United Nations. World population is expected to reach 9 billion in the year 2037. The United Nations projects world population to reach 10 billion in the year 2058. 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.

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