World population reaches 1 billion
c.1804 · Event
Best estimate (per UN/HYDE) of the date world population crossed the first billion. Subsequent milestones: 2B in 1927, 3B in 1960, 4B in 1974, 5B in 1987, 6B in 1999, 7B in 2011, 8B in 2022.
On these timelines: Master
Around 1804
- Charles Darwin (1809)
- Jenner's smallpox vaccine (1796)
- Abraham Lincoln (1809)
- Napoleonic Wars (1803)
- Battle of Trafalgar (1805)
- Napoleon's invasion of Russia (1812)
- Pride and Prejudice (1813)
- Abolition of British slave trade (1807)
- Dissolution of the Holy Roman Empire (1806)
- Cession of Louisiana to the US (1803)