data japan 2023In 2025, Japan had more than twice as many deaths as births, leading to a natural population dec (excluding mration) of over 800,000.In Japan, the current population is 124,370,947 as of 2025 with a projected decrease of 15% to 105,123,167 by 2050. −0.5% +0.041 percentage points change since 2022. Population by