The world’s population is expected to grow from nearly 6.9 billion currently to 9.3 billion by 2050 and 10.1 billion by 2100, UN population experts said on Tuesday.
The projections are used by the UN and its many agencies to devise and fund programs for problems ranging from climate change to maternal mortality.
The UN said in a report on world trends released on Tuesday that global population is expected to officially hit 6.9 billion on July 1 and 7 billion on Oct. 31. Most of the increase is expected to be from the world’s “high-fertility countries,” especially in sub-Saharan Africa.
UN Population Division director Hania Zlotnik said the projections depend on expected fertility rates, with populations in many nations aging as medical advances allow people to live longer and families opt to have fewer children.
“The world hasn’t collapsed by adding so many people, but most of the people have been added in the poorest countries,” Zlotnik said. “If they don’t achieve the lower level of fertility we are projecting they could have serious problems.”
“A world of 7 billion is both a challenge and an opportunity,” said Babatunde Osotimehin, executive director of the UN Population Fund.
“Globally, people are living longer, healthier lives and choosing to have smaller families,” he said. “But reducing inequities and finding ways to ensure the well-being of people alive today, as well as the generations that follow, will require new ways of thinking and unprecedented global cooperation.”
The non-governmental Population Action International called the projections a “wake-up call” for the international community to meet a global demand for family planning options.
“As we approach this numerical milestone, it’s important to think about the individuals contained within it,” said Suzanne Ehlers, the group’s president.