World Population Milestones

Population Milestones

This table shows when the world crossed each 1B population milestone and the number of years between each milestone.

Year Reached
Milestone
Years from Prior
18051 billion
19272 billion122
19603 billion33
19754 billion15
19875 billion12
19986 billion11
20107 billion12
20228 billion12
20379 billion (Projected)15
206110 billion (Projected)24

Sources

  1. World Population Prospects (2024 Revision) - United Nations population estimates and projections.
  2. HYDE 3.3 - Historical Database of the Global Environment (historical population estimates).
  3. Gapminder - Historical demographic data used for long-run world population context.