In 1804, the world’s population exceeds 1 billion.
- World population milestones – Wikipedia
It is estimated that the population of the world reached one billion for the first time in 1804. It would be another 123 years before it reached two billion in 1927, but it took only 33 years to rise by another billion people, reaching three billion in 1960.
- World Population Milestones – Infoplease
Find a list of world population milestones, from when it reached 1 billion in 1804 to 7 billion in 2011.
- World Population Growth Through History – Annenberg Learner
Table 1. World population milestones. Source: United Nations Secretariat, Department of Economic and Social Affairs, The World At Six Billion (1999), p. 8.
- World Population Growth – Our World in Data
200 years ago there were less than one billion humans living on earth. … and 2000, the increase in world population was three times greater than during the …