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 by2025, Japan could fall behind Germany in dollar terms in the near future - a first since 1968. From 2022 into early 2025, Japan’s economy has had quarterly expansions and contractions almost