A 2016 United Nations estimate puts the total population at 38,000,000. It covers an area of approximately 13,500 km (5,200 mi), giving it a population density of 2,642 person / km. It is the second largest single metropolitan area in the world in terms of built - up or urban function landmass at 8,547 km (3,300 mi), behind only New York City at 11,642 km (4,495 mi).
what is the population of tokyo metropolitan area
2016 United Nations estimate puts the total population at 38,000,000