World Population Milestones

World Population Reached …

  • 1 billion in 1804
  • 2 billion in 1927 (123 years later)
  • 3 billion in 1960 (33 years later)
  • 4 billion in 1974 (14 years later)
  • 5 billion in 1987 (13 years later)
  • 6 billion in 1999 (12 years later)

World Population May Reach …

  • 7 billion in 2013 (14 years later)
  • 8 billion in 2028 (15 years later)
  • 9 billion in 2054 (26 years later)

Source: United Nations Population Fund (UNFPA).


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