Population Of World In Billions 2024. It’s a project on a huge scale—at a cost of $4.5 billion. More than 70% of the world population live in 20 most populous countries of the world.

More than 70% of the world population live in 20 most populous countries of the world. The current world population of 7.6 billion is expected to reach 8.6 billion in 2030, 9.8 billion in 2050.