Press Release
National Institute of Population and Social Security Research
Original in Japanese
April 26, 2023

Tel: +81(0)3 (3595) 2984
URL: https://www.ipss.go.jp/pp-zenkoku/e/zenkoku_e2023/pp_zenkoku2023e.asp

Population Projections for Japan (2023 revision):
2021 to 2070
Summary of Results
Japan’s population is projected to decrease by 30%, and the population aged 65 and over tomake up about 40% of the population by 2070. While the projected future total fertility rates
are lower than those in the previous revision released in 2017, the pace of population decline
would slow slightly due to an increase in life expectancy and a rise in net migration of nonJapanese nationals in this revision.
The National Institute of Population and Social Security Research (IPSS) published the 2023
revision of population projections for Japan, using the Population Census of Japan in 2020 as thebase population. These projections calculate the population size and age/sex composition at thenational level based on assumptions about trends in fertility, mortality, and international migration.
These projections cover all residents of Japan.
* For details, please refer to Population Projections for Japan (2023 revision): Summary of Results (inJapanese) available online at https://www.ipss.go.jp/pp-zenkoku/j/zenkoku2023/pp_zenkoku2023.asp.

[Methodology]
The cohort-component method employing recent trends of fertility, mortality, and internationalmigration was used to obtain the future population by sex and age from 2021 to 2070 (pp.7-12).

Based on the recent demographic trends up to 2020, the size and the age structure of thepopulation as of October 1 for each year are projected up to 2070. Considering uncertainties infuture demographics, we produced nine “basic scenarios” with varying assumptions about thefuture course of fertility and mortality (medium-, high-, and low-variant for each).
Moreover, we produced three additional projections: “long-range population projections” (20712120), “population projections for the Japanese nationals”, and “conditional populationprojections”.

[Assumptions and Results]● Compared to the previous projections in 2017, the 2023 revision expects afurther decline in fertility, a slight increase in life expectancy, and a rise in net
migration.
・Reflecting the slump that had already started before the COVID-19 pandemic, the total fertility
rate in the medium-fertility scenario is projected to be 1.36 in 2070, showing a decline from
1.44 in 2065 in the 2017 revision. Furthermore, in the short term, the fertility rate will remain
low mainly due to the drop in marriages during the COVID-19 pandemic (Table 4-1 on p.43,
Figure 4-1 on p.47).
・Life expectancy is expected to increase from 81.58 years for men and 87.72 years for womenin 2020 to 85.89 years for men and 91.94 years for women in 2070 (medium-mortalityscenario). Future life expectancy is projected to be slightly higher than that in the 2017
revision (84.95 years for men and 91.35 years for women in 2065) (Table 4-2 on p.44, Figure
4-2 on p.47).
・The negative net migration for the Japanese was weakened, and this trend was incorporated
into the assumption. Meanwhile, based on the recent increase in the number of internationalmigrants during the pre-pandemic period, the net migration assumption was raised to growfrom 69,000 per year (2035) in the 2017 revision to 164,000 (2040) in this projection (Tables
4-3-4-5 on pp.45-46, Figures 4-3-4-5 on p.48).

● In 50 years, the total population is projected to decrease to nearly 70% of thecurrent level, and the population aged 65 and over to account for about 40%(medium-fertility/medium-mortality scenario).
・The total population of Japan, 126.15 million counted in the Population Census in 2020, isprojected to decrease to 87 million in 2070 (down to 69.0% of the population in 2020) (mediumfertility/medium-mortality scenario) (Table 1-1 on p .19, Figure 1-1 on p.26).
・The percentage of the population aged 65 and over is expected to rise from 28.6% in 2020 to38.7% in 2070 (Table 1-1 on p.19, Figure 1-2 on p.26).
・While the previous revision projected the total population in 2065 to be 88.08 million, the figure
is expected to be 91.59 million in this projection. Moreover, according to the assumption of thisrevision, the total population will fall below 100 million in 2056, a delay of 3 years (2053) fromthe previous projection. The pace of population decline is expected to slow down slightly,
mainly due to the increase in international migration (p.13, Table 1-1 on p.19).

・The projected percentage of the population aged 65 and over in 2065 remains unchanged fromthe previous revision at 38.4%. However, the size of the population aged 65 and over peaks at
39.53 million in 2043 in this revision, slightly more than 39.35 million in 2042 in the previousrevision (Table 1-1 on p.19).

● Projections based on high and low-fertility scenarios and projections limited
to the Japanese population
・In 2070, the total population and the percentage of the population aged 65 and over are expected
to be 95.49 million and 35.3%, respectively, in the high-fertility scenario (TFR of 1.64). In themeantime, based on the low-fertility scenario (TFR of 1.13), the figures are 80.24 million and
42.0%, respectively (Tables 1-2-1-3 on pp.20-21, Figures 1-1-1-2 on p.26).
・In the medium-fertility/medium-mortality scenario, the Japanese population in 2070 is projected
to be 77.61 million, and the percentage of the population aged 65 and over is 40.9% (Table 1on p.59, Figures 1-2 on p.61).

Thousands

Actual and projected population of Japan: Medium-, high-, and low-fertility (medium-mortality)
projections

Population pyramid: Three fertility variant projections with a medium-mortality assumption(1) 2020
100

Males

Females90

Aged 75+80

Aged 65+70

Aged 65-74

60
50
40

Aged 15-64

30
2010

Aged 0-14
130

120

110

100908070

6050403020

10000102030405060

7080

90

100

110

120130(ten thousand)(2) 2070
100

Males

Females

9080
70
60
50
403020High fertility variant projection
Medium fertility variant projection
Low fertility variant projection

100130120

11010090807060

504030201000(ten thousand)

10

20

30

40

50

60

70

80

90

100

110

120130