data japan 2023The 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 NameArts and Cultural Exchange June 12, 2025 Japan Pavilion at the 60th International Art Exhibition, La Biennale di Venezia in 2025. Dates: Saturday, April 20 – Sunday, November