The Japanese government says the trend of excessive population concentration in Tokyo continued last year, with a net population inflow from other prefectures of more than 65,000 people.

The internal affairs ministry said 451,843 people, including foreign nationals, moved to the capital during 2025, down by 9,611 from the previous year. The figure for those who moved out to other prefectures was 386,624, up by 4,455.

The net population inflow of 65,219 was the 12th annual increase in a row since comparable data first became available in 2014. But it was down by 14,066 from a year earlier, marking a smaller increase for the first time since 2021.

Ministry officials said they are closely monitoring the continued trend of population concentration in the capital, although the size of the increase shrank last year.

Six other prefectures also saw net population inflows. Kanagawa had an inflow of 28,052, followed by Saitama with 22,427 and Osaka with 15,667. The three, as well as Chiba and Fukuoka prefectures, reported a continued rise in their inflows. The population of Shiga Prefecture recorded a net inflow, after a net outflow the previous year.

Forty remaining prefectures saw net population outflows. The largest outflow of 9,921 was in Hiroshima Prefecture, followed by Fukushima at 7,197, Shizuoka at 6,711 and Niigata at 6,379.

Yamanashi Prefecture experienced a reversal of the trend from a year earlier and marked a net outflow in 2025.

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