World Population
(1500 - current)
Population Milestones
| Population | Year | Nbr Years Per Billion | |
|---|---|---|---|
| 1B | 1804 | ||
| 2B | 1927 | 123 | 123 years from 1B to 2B |
| 3B | 1959 | 32 | |
| 4B | 1974 | 15 | |
| 5B | 1987 | 13 | |
| 6B | 1998 | 11 | only 11 years from 5B to 6B |
| 7B | 2011 | 13 | ← not sure why the increase to 13 years from 6B to 7B |
Nbr Years Per Billion
- 123
- 32
- 15
- 13
- 11
- 13
- 1B - 2B
- 2B - 3B
- 3B - 4B
- 4B - 5B
- 5B - 6B
- 6B - 7B