Regarding the three largest cities, according to the major city population statistics before a census was started, Tokyo had 15 wards including Kojimachi Ward, and Osaka had four wards; Higashi Ward (Osaka City), Nishi Ward (Osaka City), Minami Ward (Osaka City) and Kita Ward (Osaka City), and Kyoto had two wards; Kamigyo Ward and Shimogyo Ward.
国勢調査以前の日本の人口統計主要都市人口で見ると、日本三大都市の東京には麹町区以下東京15区、大阪には東区(大阪市)・西区(大阪市)・南区(大阪市)・北区(大阪市)の4区、京都には上京区・下京区の2区が置かれた。