the world population reached the first billion mark approximately in 1804.
the world population reached the first billion mark approximately in 1804.
approximately on which year the world population reached the first billion mark?
1804
section::::history.:milestones by the billions.









































it is estimated that the world population reached one billion for the first time in 1804. it was another 123 years before it reached two billion in 1927, but it took only 33 years to reach three billion in 1960. thereafter, the global population reached four billion in 1974, five billion in 1987, six billion in 1999 and, according to the united states census bureau, seven billion in march 2012. the united nations, however, estimated that the world population reached seven billion in october 2011.
world population
the world population more than tripled during the 20th century from about 1.65 billion in 1900 to 5.97 billion in 1999. it reached the 2 billion mark in 1927, the 3 billion mark in 1960, 4 billion in 1974, and 5 billion in 1987. the overall population of the world is approximately 7.7 billion as of december 2018. currently, population growth is fastest among low wealth, least developed countries. the un projects a world population of 9.15 billion in 2050, which is a 32.69% increase from 2010 (6.89 billion).









































section::::history.
demographics of the world