data japan 2024The 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 NameJapan Foren Portfolio Investment: USD mn data is updated quarterly, available from Mar 1996 to Dec 2025. The data reached an all-time hh of 125.440 USD bn in Dec 2020 and a record