42 percent of the city’s working population Tokyo population 13 million number one most populated metropolitan area Oktoberfest in Yokohama larger than New York and Los Angeles combined 13 million with a greater metropolitan population of 13 million with a greater metropolitan population of 13 million grew by 17 percent 13 million Tokyo with a greater metropolitan population of 13 million estimated 38 million inhabitants worldpopulationreview.com 9 million and growing Tokyo millions peak around 38.5 million an astounding 36 million people World Population: Tokyo population number one most populated metropolitan area number one most populated metropolitan area 13 million an astounding 36 million people Tokyo worldpopulationreview.com 36 million people 36 million people population of 38 million 13 million home to 13.5 million people