According to multiple sources, the estimated population of Tokyo in 2023 is 37,194,000. This is the current metro area population of Tokyo, which includes neighboring prefectures as well as Tochigi, Gunma, and Ibaraki. The population of Tokyo is estimated to be 13.491 million as of October 1, 2015, and it has the largest population among all the 47 prefectures in Japan. The city has 6.946 million households, with an average of 1.94 persons per household. The number of foreign residents according to the basic resident register is 440,000 as of October 1, 2015.