Japan Population 2025 Trends. 76 rows the current population of japan is 123,372,989 as of february 04, 2025, based on interpolation of the latest united nations data. The national institute of population and social security research officially announced the new future population projections for japan.

The population of japan is estimated to be 124.4 million in 2023 using united nations estimates. Today, historical, and projected population, growth rate, immigration, median age.