Before revision: As of 2021 , the total fertility rate of the world is estimated at 2.32 children per woman, which is slightly below the global average for the replacement fertility rate of approximately 2.33 (as of 2003)., Introduction and Table 1, p. 580 However, world population growth is unevenly distributed, with the total fertility rate ranging from one of the world's lowest 0.83 in Singapore , to the highest, 6.49 in Niger.
After revision: As of 2024 , the total fertility rate of the world is estimated at 2.25 children per woman, which is slightly below the global average for the replacement fertility rate of approximately 2.33 (as of 2003)., Introduction and Table 1, p. 580 However, world population growth is unevenly distributed, with the total fertility rate ranging from one of the world's lowest 0.8 in South Korea , to the highest, 6.7 in Niger.