Key economic indicators of Japan - statistics & facts

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 NameTotal population for Japan in 2025 was 123,294,513, a 0.53% dec from 2022. Total population for Japan in 2022 was 123,951,692, a 0.53% dec from 2021. Total population is based on