South Korea Population 2025 Projection. The south korean population has been on a downward trajectory since 2020 due to lower birth rate in the world, will shrank. South korea ranks number 29 in the list of countries (and dependencies) by population.

Revised population projections from the results of the population census carried out between 1960 and 1975 ; South korea population in 2025 is estimated to be 51.44 million.