data japan 2023In 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 byData for China, Japan from The World Bank: Data. Free and open access to global development data. Free and open access to global development data. Data. HOME. ... (2025 trillion) Trend.