data japan 2024Money Supply M2 in Japan increased to 1265906.20 JPY Billion in April from 1254619.30 JPY Billion in March of 2025. This page provides - Japan Money Supply M2 - actual values,The 2025 population density in Japan is 338 people per Km2 (875 people per mi2), calculated on a total land area of 364,555 Km2 (140,755 sq. miles). Largest Cities in Japan City Name