As of 2024, the total population in Japan was estimated to number approximately 123.84 million people. The projection for 2100 indicated an almost 50 percent decrease in population to around 62.78 million people.

Approximately 36.5 million people in Japan were estimated to be within the age group 65 and over in 2024. This number was projected to increase until 2040 and then decline to about 20.1 million by 2120.

The statistic shows the total population in Japan from 2019 to 2023, with projections up until 2029. In 2023, the total population of Japan amounted to around 124.48 million inhabitants. See the figures for the population of South Korea for comparison. Total population in Japan From steadily low fertility rates to a growing elderly population, it is no secret that Japan’s population is shrinking. Population growth rates jump around a little, but are currently following a declining trend. The post-war baby boom generation is now in the 65-and-over age group, and the percentage of the population in that category is expected to keep growing, as is indicated by a high median age and high life expectancy. Japan already has the highest percentage of its population over 65 in the world, and the aging population puts some pressure on the Japanese government to provide welfare services for more people as rising numbers leave the workforce. However, the amount of jobs opened up for the younger generations by the older generations leaving the workforce means that unemployment is kept to a minimum. Despite a jump in unemployment after the global recession hit in 2008, rates were almost back to pre-recession rates by 2013. Another factor affecting Japan is the number of emigrants to other countries. The United States absorbs a number of emigrants worldwide, so despite a stagnating birth rate, the U.S. has seen a steady rise in population.

Population growth (annual %) in Japan was reported at --0.48737 % in 2023, according to the World Bank collection of development indicators, compiled from officially recognized sources. Japan - Population growth (annual %) - actual values, historical data, forecasts and projections were sourced from the World Bank on March of 2025.

Japan IPSS: Population: Projection: Medium Mortality: High Birth Rate data was reported at 94,903.610 Person th in 2065. This records a decrease from the previous number of 95,688.439 Person th for 2064. Japan IPSS: Population: Projection: Medium Mortality: High Birth Rate data is updated yearly, averaging 113,738.979 Person th from Dec 2015 (Median) to 2065, with 51 observations. The data reached an all-time high of 127,094.745 Person th in 2015 and a record low of 94,903.610 Person th in 2065. Japan IPSS: Population: Projection: Medium Mortality: High Birth Rate data remains active status in CEIC and is reported by National Institute of Population and Social Security Research. The data is categorized under Global Database’s Japan – Table JP.G004: Population: Projection: National Institute of Population and Social Security Research.

Japan IPSS: Population: Projection: Low Mortality: High Birth Rate data was reported at 96,570.605 Person th in 2065. This records a decrease from the previous number of 97,346.029 Person th for 2064. Japan IPSS: Population: Projection: Low Mortality: High Birth Rate data is updated yearly, averaging 115,105.879 Person th from Dec 2015 (Median) to 2065, with 51 observations. The data reached an all-time high of 127,094.745 Person th in 2015 and a record low of 96,570.605 Person th in 2065. Japan IPSS: Population: Projection: Low Mortality: High Birth Rate data remains active status in CEIC and is reported by National Institute of Population and Social Security Research. The data is categorized under Global Database’s Japan – Table JP.G004: Population: Projection: National Institute of Population and Social Security Research.

PERIOD: 1920-1939. NOTE: (As of October 1st but as of September 1st in 1923)The population estimates were obtained as follows: (1) For 1921 to 1923, the population estimate is the sum of county- and city-level population estimates obtained by multiplying the de facto population in the Population Census conducted on October 1, 1920, with the average annual population growth rate by gender from 1908 to 1918. (2) For 1924, the difference between the population of Japan overall calculated using the population growth rate by sex in each city and summing up the results and the population overall calculated using the population growth rate by sex for Japan overall was proportionally subtracted from the population of each prefecture; moreover, the population decrease due to the Great Kanto Earthquake on September 1, 1923 was also taken into account. (3) For Taisho 1926 to 1929, the de facto population in the 1920 and 1925 Population Censuses is used to obtain the annual average geometric growth rate of Japan's population overall, which is then used to estimate the population. (4) For 1931 to 1934, the same procedure is employed using the de facto population in the 1920 and 1930 Population Censuses. (5) From 1926 onward, the population estimates are obtained by adding the increase in the difference between births and deaths up to each estimation year in the 1935 Population Census using the results of the Vital Statistics survey. SOURCE: [Survey by the Statistics Bureau, Imperial Cabinet].

Approximately 20.6 million women within the age group of 65 years and older were forecast for 2024 in Japan. While the projection indicated a constant decrease for women aged under 65 years, the female population aged 65 and older was forecast to grow until 2040 and thereafter drop to about 11 million by 2120.

Chart and table of population level and growth rate for the Tokyo, Japan metro area from 1950 to 2025. United Nations population projections are also included through the year 2035.

Japan IPSS: Population: Projection: Medium Mortality: Medium Birth Rate data was reported at 88,076.506 Person th in 2065. This records a decrease from the previous number of 89,036.383 Person th for 2064. Japan IPSS: Population: Projection: Medium Mortality: Medium Birth Rate data is updated yearly, averaging 110,918.554 Person th from Dec 2015 (Median) to 2065, with 51 observations. The data reached an all-time high of 127,094.745 Person th in 2015 and a record low of 88,076.506 Person th in 2065. Japan IPSS: Population: Projection: Medium Mortality: Medium Birth Rate data remains active status in CEIC and is reported by National Institute of Population and Social Security Research. The data is categorized under Global Database’s Japan – Table JP.G004: Population: Projection: National Institute of Population and Social Security Research.

Population ages 0-14, female (% of female population) in Japan was reported at 11.07 % in 2023, according to the World Bank collection of development indicators, compiled from officially recognized sources. Japan - Population ages 0-14, female (% of total) - actual values, historical data, forecasts and projections were sourced from the World Bank on March of 2025.

As of October 2024, the total female population in Japan was estimated to be around 63.67 million people. With an estimated 25.64 million women by 2120, the data indicated a decrease of about 40 percent.

Population ages 00-04, female (% of female population) in Japan was reported at 3.1719 % in 2023, according to the World Bank collection of development indicators, compiled from officially recognized sources. Japan - Population ages 0-4, female (% of female population) - actual values, historical data, forecasts and projections were sourced from the World Bank on March of 2025.

In 2024, the number of men within the age group of 65 years and older in Japan was forecast at approximately 15.8 million people. While the projection indicated a constant decrease for men aged under 14 years and from 15 to 64 years, the male population aged 65 and older was forecast to grow until 2040 and thereafter drop to about nine million by 2120.

Chart and table of population level and growth rate for the Nagano, Japan metro area from 1950 to 2025. United Nations population projections are also included through the year 2035.

Forecast: Population in Urban Agglomerations of More Than 1 Million in Japan 2024 - 2028 Discover more data with ReportLinker!

Chart and table of population level and growth rate for the Matsuyama, Japan metro area from 1950 to 2025. United Nations population projections are also included through the year 2035.

Japan JP: Urban Population Growth data was reported at 0.248 % in 2017. This records a decrease from the previous number of 0.344 % for 2016. Japan JP: Urban Population Growth data is updated yearly, averaging 0.900 % from Dec 1960 (Median) to 2017, with 58 observations. The data reached an all-time high of 4.082 % in 1961 and a record low of 0.248 % in 2017. Japan JP: Urban Population Growth data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Japan – Table JP.World Bank: Population and Urbanization Statistics. Urban population refers to people living in urban areas as defined by national statistical offices. It is calculated using World Bank population estimates and urban ratios from the United Nations World Urbanization Prospects.; ; World Bank staff estimates based on the United Nations Population Division's World Urbanization Prospects: 2014 Revision.; Weighted average;

Population ages 50-54, female (% of female population) in Japan was reported at 7.4994 % in 2023, according to the World Bank collection of development indicators, compiled from officially recognized sources. Japan - Population ages 50-54, female (% of female population) - actual values, historical data, forecasts and projections were sourced from the World Bank on March of 2025.

The world's most accurate population datasets. Seven maps/datasets for the distribution of various populations in Japan: (1) Overall population density (2) Women (3) Men (4) Children (ages 0-5) (5) Youth (ages 15-24) (6) Elderly (ages 60+) (7) Women of reproductive age (ages 15-49).