data japan 2024A report by the OECD on Japan's economic outlook, policies and challenges in 2025. It covers topics such as inflation, monetary policy, fiscal sustainability, demographic headwinds and productivity growth.Total current population for Japan in 2025 is 121,960,408, a 0.55% dec from 2025.. Total population for Japan in 2025 was 122,631,432, a 0.54% dec from 2025.; Total population