As of September 2024, around ****** men and ****** women in Japan were aged 100 years and older. The total number of centenarians in that year added up to about ****** in the country, growing continuously over the past two decades.

In 2023, women made up about **** percent of centenarians in Japan, indicating that the vast majority of people aged 100 years and older in the country were female. The share of women among centenarians peaked in the previous year at **** percent.

Japan Population Census: Age 100 to 104 Years data was reported at 61,763.000 Person in 2015. This records an increase from the previous number of 43,882.000 Person for 2010. Japan Population Census: Age 100 to 104 Years data is updated yearly, averaging 43,882.000 Person from Dec 2005 (Median) to 2015, with 3 observations. The data reached an all-time high of 61,763.000 Person in 2015 and a record low of 23,873.000 Person in 2005. Japan Population Census: Age 100 to 104 Years data remains active status in CEIC and is reported by Statistical Bureau. The data is categorized under Global Database’s Japan – Table JP.G002: Population: Annual.

Over the last decade, Japan’s population has aged more and more, to the point where more than a quarter of Japanese were 65 years and older in 2022. Population growth has stopped and even reversed, since it’s been in the red for several years now.

It’s getting old

With almost 30 percent of its population being elderly inhabitants, Japan is considered the “oldest” country in the world today. Japan boasts a high life expectancy, in fact, the Japanese tend to live longer than the average human worldwide. The increase of the aging population is accompanied by a decrease of the total population caused by a sinking birth rate. Japan’s fertility rate has been below the replacement rate for many decades now, mostly due to economic uncertainty and thus a decreasing number of marriages.

Are the Japanese invincible?

There is no real mystery surrounding the ripe old age of so many Japanese. Their high average age is very likely due to high healthcare standards, nutrition, and an overall high standard of living – all of which could be adopted by other industrial nations as well. But with high age comes less capacity, and Japan’s future enemy might not be an early death, but rather a struggling social network.

Population density per pixel at 100 metre resolution. WorldPop provides estimates of numbers of people residing in each 100x100m grid cell for every low and middle income country. Through ingegrating cencus, survey, satellite and GIS datasets in a flexible machine-learning framework, high resolution maps of population counts and densities for 2000-2020 are produced, along with accompanying metadata. DATASET: Alpha version 2010 and 2015 estimates of numbers of people per grid square, with national totals adjusted to match UN population division estimates (http://esa.un.org/wpp/) and remaining unadjusted. REGION: Africa SPATIAL RESOLUTION: 0.000833333 decimal degrees (approx 100m at the equator) PROJECTION: Geographic, WGS84 UNITS: Estimated persons per grid square MAPPING APPROACH: Land cover based, as described in: Linard, C., Gilbert, M., Snow, R.W., Noor, A.M. and Tatem, A.J., 2012, Population distribution, settlement patterns and accessibility across Africa in 2010, PLoS ONE, 7(2): e31743. FORMAT: Geotiff (zipped using 7-zip (open access tool): www.7-zip.org) FILENAMES: Example - AGO10adjv4.tif = Angola (AGO) population count map for 2010 (10) adjusted to match UN national estimates (adj), version 4 (v4). Population maps are updated to new versions when improved census or other input data become available.

Key information about Japan population

• The Japan population reached 123.7 million people in Dec 2024, compared with the previously reported figure of 124.3 million people in Dec 2023
• The data reached an all-time high of 128.1 million people in Dec 2010 and a record low of 43.4 million people in Dec 1899

• In the latest reports, Japan Unemployment Rate increased to 2.5 % in Oct 2024
• Monthly earnings of the Japan population was 1,957.4 USD in Oct 2024
• Japan Labour Force Participation Rate remained the same rate at 63.5 % in Oct 2024

Graph and download economic data for Infra-Annual Labor Statistics: Working-Age Population Total: From 15 to 64 Years for Japan (LFWA64TTJPM647S) from Jan 1970 to Jul 2025 about working-age, 15 to 64 years, Japan, and population.

In 1800, the population of Japan was just over 30 million, a figure which would grow by just two million in the first half of the 19th century. However, with the fall of the Tokugawa shogunate and the restoration of the emperor in the Meiji Restoration of 1868, Japan would begin transforming from an isolated feudal island, to a modernized empire built on Western models. The Meiji period would see a rapid rise in the population of Japan, as industrialization and advancements in healthcare lead to a significant reduction in child mortality rates, while the creation overseas colonies would lead to a strong economic boom. However, this growth would slow beginning in 1937, as Japan entered a prolonged war with the Republic of China, which later grew into a major theater of the Second World War. The war was eventually brought to Japan's home front, with the escalation of Allied air raids on Japanese urban centers from 1944 onwards (Tokyo was the most-bombed city of the Second World War). By the war's end in 1945 and the subsequent occupation of the island by the Allied military, Japan had suffered over two and a half million military fatalities, and over one million civilian deaths.

The population figures of Japan were quick to recover, as the post-war “economic miracle” would see an unprecedented expansion of the Japanese economy, and would lead to the country becoming one of the first fully industrialized nations in East Asia. As living standards rose, the population of Japan would increase from 77 million in 1945, to over 127 million by the end of the century. However, growth would begin to slow in the late 1980s, as birth rates and migration rates fell, and Japan eventually grew to have one of the oldest populations in the world. The population would peak in 2008 at just over 128 million, but has consistently fallen each year since then, as the fertility rate of the country remains below replacement level (despite government initiatives to counter this) and the country's immigrant population remains relatively stable. The population of Japan is expected to continue its decline in the coming years, and in 2020, it is estimated that approximately 126 million people inhabit the island country.

Japan JP: Age Dependency Ratio: % of Working-Age Population data was reported at 66.487 % in 2017. This records an increase from the previous number of 65.290 % for 2016. Japan JP: Age Dependency Ratio: % of Working-Age Population data is updated yearly, averaging 47.350 % from Dec 1960 (Median) to 2017, with 58 observations. The data reached an all-time high of 66.487 % in 2017 and a record low of 43.299 % in 1992. Japan JP: Age Dependency Ratio: % of Working-Age Population 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.WDI: Population and Urbanization Statistics. Age dependency ratio is the ratio of dependents--people younger than 15 or older than 64--to the working-age population--those ages 15-64. Data are shown as the proportion of dependents per 100 working-age population.; ; World Bank staff estimates based on age distributions of United Nations Population Division's World Population Prospects: 2017 Revision.; Weighted average; Relevance to gender indicator: this indicator implies the dependency burden that the working-age population bears in relation to children and the elderly. Many times single or widowed women who are the sole caregiver of a household have a high dependency ratio.

This statistic presents the results of a survey on the perceived percentage of population over 65 years old by 2050 in Japan as of 2018. According to data published by Ipsos, Japanese respondents overestimated the proportion of their population who will be over ** in 2050. On average, the respondents thought that around ** out of every 100 people in Japan will be over 65 years old in 2050, when the actual share of elderly population, according to projections by the World Bank, will be around ** percent in Japan.

In 2024, Monaco was the country with the highest percentage of the total population that was over the age of 65, with ** percent. Japan had the second highest with ** percent, while Portugal and Bulgaria followed in third with ***percent.

Japan No. of Establishment: Scale: 100 to 499 People data was reported at 25,321.000 Person th in 2018. This records an increase from the previous number of 23,360.000 Person th for 2017. Japan No. of Establishment: Scale: 100 to 499 People data is updated yearly, averaging 18,025.000 Person th from Oct 2010 (Median) to 2018, with 9 observations. The data reached an all-time high of 25,321.000 Person th in 2018 and a record low of 14,944.000 Person th in 2010. Japan No. of Establishment: Scale: 100 to 499 People data remains active status in CEIC and is reported by Ministry of Health, Labour and Welfare. The data is categorized under Global Database’s Japan – Table JP.G131: Number of Foreign Employment Establishments.

Japan JP: Age Dependency Ratio: % of Working-Age Population: Old data was reported at 45.032 % in 2017. This records an increase from the previous number of 43.909 % for 2016. Japan JP: Age Dependency Ratio: % of Working-Age Population: Old data is updated yearly, averaging 16.239 % from Dec 1960 (Median) to 2017, with 58 observations. The data reached an all-time high of 45.032 % in 2017 and a record low of 8.767 % in 1960. Japan JP: Age Dependency Ratio: % of Working-Age Population: Old 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.WDI: Population and Urbanization Statistics. Age dependency ratio, old, is the ratio of older dependents--people older than 64--to the working-age population--those ages 15-64. Data are shown as the proportion of dependents per 100 working-age population.; ; World Bank staff estimates based on age distributions of United Nations Population Division's World Population Prospects: 2017 Revision.; Weighted average;

There were 65 300 000 Facebook users in Japan in January 2025, which accounted for 52.4% of its entire population. The majority of them were women - 55.7%. People aged 25 to 34 were the largest user group (15 500 000). The highest difference between men and women occurs within people aged 18 to 24, where women lead by 6 100 000.

There were 18 486 000 Facebook users in Japan in June 2019, which accounted for 14.8% of its entire population. The majority of them were men - 51.9%. People aged 25 to 34 were the largest user group (5 700 000). The highest difference between men and women occurs within people aged 45 to 54, where men lead by 2 100 000.

In Japan, the population sex ratio has seen slight changes over the past decades. In 2021, the number of men was around **** for every 100 women, constituting a decrease from **** in 1950.

What is the sex ratio? The population sex ratio is determined by the sex ratio at birth, different mortality rates between men and women, as well as losses and gains through migration. In the absence of alteration, the sex ratio in human populations is quite constant, with only minor deviations. While the sex ratio at birth is usually *** to ***, the population sex ratio, which refers to the total number of males for every 100 females, is often below 100. The reason for the shift mostly lies in differing lifestyles and physical constitutions of men and women. In general, women tend to be more resistant to disease throughout life, while men tend to engage in higher risk behavior or violence.

Influences and consequences
The sex ratio at birth and its possible determinants such as gestation environment, climate change, chemical pollution or socio-economic factors have long been subject to scientific research. Recently the impact of natural disasters, like the nuclear disaster in Japan in 2011, was presumed to influence the sex ratio at birth. The adult gender ratio has long been recognized as a key population-level determinant of behavior. However, there are many different or competing theories in existing literature about the social impacts of gender imbalance on topics such as violence, family stability, reproduction etc.

The median age of the population in Japan has steadily been increasing since 1950 and is projected to be around 47.7 years old in 2020. As of 2021, the median age of Japan is the second highest in the world, behind the Principality of Monaco. The elderly in Japan An improved quality of life and regular health checks are just two reasons why Japan has one of the highest life expectancies in the world. The life expectancy from birth in Japan improved significantly after World War II, rising 20 years in the decade between 1945 and 1955. As life expectancy continues to increase, Japan expects difficulties caring for the older generation in the future. Shortages in the service sector are already a major concern, with demand for nurses and care workers increasing. Fertility and birth rates The fertility rate among Japan’s population has been around 1.4 children per woman since 2010. Apart from a small baby boom in the early seventies, the crude birth rate of Japan has been declining since 1950 and is expected to be as low as 7.5 births per thousand people in 2020. With falling birth rates and such a large share of its inhabitants reaching their later years, Japan’s total population is expected to continue declining.

This dataset displays data from the 2005 Census of Japan. It displays data on Private Households with Related Members 65 Years of Age and Over throughout prefectures in Japan. This dataset specifically deals with number of Private Households with Related Members 65 Years of Age and Over, Number of Private Households with Related Members 65 Years of Age and Over, and number of 65 and older persons living with related members. This data comes from Japan's Ministry of Internal Affairs and Communication's Statistics Bureau.

There were 67 800 000 Facebook users in Japan in June 2025, which accounted for 54.4% of its entire population. The majority of them were women - 55.6%. People aged 25 to 34 were the largest user group (16 000 000). The highest difference between men and women occurs within people aged 18 to 24, where women lead by 6 100 000.

Constrained estimates, total number of people per grid-cell. The dataset is available to download in Geotiff format at a resolution of 3 arc (approximately 100m at the equator). The projection is Geographic Coordinate System, WGS84. The units are number of people per pixel. The mapping approach is Random Forest-based dasymetric redistribution.

More information can be found in the Release Statement

The difference between constrained and unconstrained is explained on this page: https://www.worldpop.org/methods/top_down_constrained_vs_unconstrained