All of Japan’s prefectures’ populations will be down in 2040 from 2010 levels


By 2040, the populations of all 47 of Japan’s prefectures will be less than their 2010 levels, a health ministry-affiliated research institute said Wednesday, with Okinawa marking the least decline, followed by Tokyo.

Meanwhile, people aged 65 or over will make up more than 30 percent of the population in each prefecture by 2040, according to the National Institute of Population and Social Security Research, underlining the growing aging society.

The latest estimates were made on the basis of national census data in October 2010.

The country’s total population is forecast to drop 16.2 percent from the 2010 level to 107,276,000 in 2040.

By prefecture in 2040, Akita’s population will have dropped 35.6 percent from the 2010 level, Aomori’s will be off 32.1 percent and Kochi’s 29.8 percent. The lowest declines will be the 7.2 percent drop in Shiga, 6.5 percent in Tokyo and 1.7 percent in Okinawa.

The proportion of people aged 65 or over in 2040 is estimated the highest in Akita, at 43.8 percent, followed by 41.5 percent in Aomori and 40.9 percent in Kochi.