November 30, 2007
2007 World Population
We entered the 20th century with a population of 1.6 billion people. We entered the 21st century with 6.1 billion people. And in 2007, world population is 6.6 billion.
Demographic, health, and environment data for all the countries and major regions of the world: World Population Data Sheet (pdf, 776 kB), provided by the Population Reference Bureau (PRB, Website).
Some key findings, listed in PRB’s Population Bulletin Vol. 62/3 (pdf, 971 kB):
- Russia’s population is projected to decline from 142 million in 2007 to 128 million by 2025.
- Qatar has the world’s highest level of carbon dioxide per capita: 37 metric tons.
- In Swaziland, 33.4% of adults have HIV/AIDS.



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