Tokyo Population 2024 Policy. 9 and submitted a proposal, population vision 2100, with the. Japan's population of more than 125 million people is projected to fall by about 30%, to 87 million by 2070, with four out of every 10 people 65 years of age or older.
Japan’s population peaked in 2008 and last year it shrank by 800,000. Its largest city, tokyo, has over 8 million residents, while there are 13 additional cities that have populations that exceed 1 million.