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 NameThe JIP Database 2025 comprises, for the period from 1994 to 2020, various types of annual data necessary for estimating total factor productivity (TFP) in 100 industries