Greater Tokyo Population 2024. The population decreased in 46 prefectures. Tokyo's net population inflow stood at 68,285 in 2023, far exceeding the previous year's 38,023, a survey by the internal affairs ministry showed tuesday.
The metro area is home to about 30% of japan’s total population. The prefecture has grown into one of the world’s megacities and is home to around 13.5 million people, making up over 10 percent of the nation’s total population.