Why Population Matters
The subject of population touches upon a wide variety of human interests from reproductive rights to economic development to a sustainable world.
The Population Institute periodically posts fact sheets on topics of current interests relating to population, family planning, gender equality, and reproductive rights. Check out our latest fact sheets.
The Population Institute issues periodic reports that will give an in-depth look at key facts and trends relating to important population topics.
While the world’s population growth rate is declining, world population continues to increase. In 1969, when the first World Population Day was observed, world population was 3.6 billion. In 2019, half a century later, world population was 7.7 billion. If fertility rates continue to decline, the UN projects that world population will increase to 9.8 billion by 2050 and to nearly 11 billion by 2100.