Japan

Name: Japan Population Statistics
Creator: Measured World
Published: 2024-07-01
License: https://creativecommons.org/licenses/by/3.0/igo/

1950

2025

2100

Japan

1950

2025

2100

What to know

Population peaked at 128,192,470 in 2009. Now: 123,103,479.

Population is shrinking at -0.51% per year.

Projected to decline to 76,845,989 by 2100 (-38% from today).

Key statistics for 2025

Total population

123.1M

Density

327 people/km²

Median age

49.8 years

Growth rate

-0.54%

Key terms

Population growth rate: — Annual percentage change in total population size.
Population density: — People per square kilometre of land area.
Median age: — Age at which half the population is younger and half is older.
Sex ratio: — Number of males per 100 females in the population.

The trajectory

Population peaked in 2009

Total population from 1950 to 2100 (projections beyond 2024)

Since the 2009 peak, the population has declined by 4.0%.

Population structure

How is the population split by gender?

Male and female population with sex ratio trend

No population by gender data available.

The sex ratio of 95.2 males per 100 females is below the global average (~101).

Density & aging

Density

People per square kilometre

Median age

Age where half the population is younger

Population density of 327 people per km² is moderate by global standards. The median age is projected to rise by 3 years by 2050, from 49.4 to 52.8.

Rate of change

How fast is the population changing?

Annual percentage change in population size

Growth peaked at 1.73% in 1950.

The bottom line

Japan passed its population peak 16 years ago in 2009, and has since declined by 4.0%. The population is gradually aging, with median age projected to reach 53 by 2050. UN projections show a decline to 76.8M by 2100.

Source: UN World Population Prospects 2024. Historical estimates (1950–2024) and medium-variant projections (2025–2100).

What to know

Population peaked at 128,192,470 in 2009. Now: 123,103,479.

Population is shrinking at -0.51% per year.

Projected to decline to 76,845,989 by 2100 (-38% from today).

Key statistics for 2025

Total population

123.1M

Density

327 people/km²

Median age

49.8 years

Growth rate

-0.54%

Key terms

Population growth rate: — Annual percentage change in total population size.
Population density: — People per square kilometre of land area.
Median age: — Age at which half the population is younger and half is older.
Sex ratio: — Number of males per 100 females in the population.

The trajectory

Population peaked in 2009

Total population from 1950 to 2100 (projections beyond 2024)

Since the 2009 peak, the population has declined by 4.0%.

Population structure

How is the population split by gender?

Male and female population with sex ratio trend

No population by gender data available.

The sex ratio of 95.2 males per 100 females is below the global average (~101).

Density & aging

Density

People per square kilometre

Median age

Age where half the population is younger

Population density of 327 people per km² is moderate by global standards. The median age is projected to rise by 3 years by 2050, from 49.4 to 52.8.

Rate of change

How fast is the population changing?

Annual percentage change in population size

Growth peaked at 1.73% in 1950.

The bottom line

Source: UN World Population Prospects 2024. Historical estimates (1950–2024) and medium-variant projections (2025–2100).

Japan - Population Statistics | Measured World