In 2018 the greater Tokyo region (Tokyo, Saitama, Chiba and Kanagawa prefectures) recorded the 23rd consecutive year of net population growth with a net inflow of 139,868 residents (135,600 of whom were Japanese citizens). This is a 16.8% increase from the net inflow seen in 2017 and the second year in a row to record an expansion in the growth rate. Over half of the net inflow were those aged between 20 and 24.
Chiba Prefecture’s population has declined for the first time since record keeping began in 1920. Although the total population of greater Tokyo, which includes Tokyo, Kanagawa, Saitama and Chiba, increased last year, certain districts within the greater area are beginning to see the start of a natural decrease in population.
Tokyo’s population has recently seen a net decrease as residents fled the city following the March 11 Tohoku Disaster and the nuclear emergency.
The hiring season and university enrollment schedule in Spring/Summer usually sees the Tokyo population rise. However, the statistics for June and July showed that the number of people who moved out of the Tokyo metropolitan area exceeded the number who moved into the area, causing the total population to decrease by 4,000 in greater Tokyo, and 6,400 in Tokyo alone. This is despite the thousands of new residents moving in from the Tohoku region.