data japan 2023GDP growth (annual %) - Japan from The World Bank: Data. Free and open access to global development data. Free and open access to global development data. Data. HOME.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