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 NameThe last Article IV Executive Board Consultation was on March 26, 2025. Listed below are items related to Japan. Read the latest Article IVCountry report (April 2, 2025)