| Year | Total world population (mid-year figures) | Ten-year growth rate (%) |
|---|---|---|
| 1950 | 2,556,000,053 | 18.9% |
| 1960 | 3,039,451,023 | 22.0 |
| 1970 | 3,706,618,163 | 20.2 |
| 1980 | 4,453,831,714 | 18.5 |
| 1990 | 5,278,639,789 | 15.2 |
| 2000 | 6,082,966,429 | 12.6 |
| 20101 | 6,848,932,929 | 10.7 |
| 20201 | 7,584,821,144 | 8.7 |
| 20301 | 8,246,619,341 | 7.3 |
| 20401 | 8,850,045,889 | 5.6 |
| 20501 | 9,346,399,468 | — |
Projected.Source: U.S. Census Bureau, International Database.
SEPT. 6, 2018 — According to the U.S. Census Bureau’s 2017 National Population Projections by 2030, all baby boomers will be older than age 65.
This will expand the size of the older population so that 1 in every 5 residents will be retirement age.
By 2035, there will be 78.0 million people 65 years and older compared to 76.7 million (previously 76.4 million) under the age of 18.