The statistic shows the population of the Greater Tokyo Area from 1950 to 2015, with a projection up to 2030. In 2015, the population of the Greater Tokyo Area stood at about 37.3 million and was estimated to maintain that level until 2020.

In 2023, the total population in Japan's capital Tokyo Prefecture amounted to approximately **** million inhabitants. Tokyo's population rebounded after it declined for the first time post-WWII in ****.

In 2023, approximately *** million people within the age group of 15 to 64 years were counted in Tokyo Prefecture, an increase from about *** million people recorded in 2020. Over *** million inhabitants in the metropolis were aged 65 years and older.

Estimation results for detailed periods.

Hamamatsu was the largest major city in Japan based on city area in 2024, with a size of close to **** thousand square kilometers. It was followed by Shizuoka, with a size of more than **** square kilometers. Overconcentration in Tokyo Economic, political, and financial activity in Japan is heavily concentrated in Tokyo. With around **** million inhabitants, the metropolitan area of Tokyo is the largest urban conglomeration in the world. Most of Japan’s largest companies have their headquarters in Tokyo, and the region attracts many young people who move there to study or work. A breakdown of the net migration flow in Japan showed that the prefectures of Tokyo, Kanagawa, Saitama, and Chiba, all part of the Tokyo metropolitan area, attract the largest number of people. In contrast, the majority of prefectures, especially those located in rural parts of the country, lose a substantial part of their population every year. Demographic trend in rural regions The overconcentration of economic activity in Tokyo has an impact on the demographic situation in rural parts of the country. Japan’s population is shrinking and aging, and rural regions are particularly affected by this. Many young people leave their rural hometowns to seek better opportunities in urban parts of Japan, leaving behind an aging population. As a result, many rural communities in Japan struggle with depopulation and a notable share of municipalities are even threatened with disappearance in the coming decades.

Estimation results for the weekend afternoon.

Urban population (% of total population) in Japan was reported at 92.13 % in 2024, according to the World Bank collection of development indicators, compiled from officially recognized sources. Japan - Urban population (% of total) - actual values, historical data, forecasts and projections were sourced from the World Bank on July of 2025.

As of October 1, 2015, the commuting population in Japan's Greater Tokyo Area amounted to approximately 22.25 million people, representing the metropolitan area with the most commuters. Since 2000, the commuting population has successively decreased in each region.

Description of population size class model (PSCM). Formulation of PSCM from the commute network data of Tokyo metropolitan area is given in Section A. The stochastic version of PSCM to analyze the probability of a global epidemic is given in Section B. The deterministic version of PSCM to analyze the final size of the global epidemic, the time until the global epidemic attains its peak, the final size of the local epidemic, and the arrival time of the epidemic in each local population is given in Section C. (PDF)

Enhancement of collective immunity by selective vaccination against an emerging influenza pandemic. Contains Figure S1, Figure S2, Figure S3, and Table S1. Figure S1. Pseudo code of a single step of the simulation. All information on the simulated urban area is contained in the structure instance city, which is located in shared memory. Iterations and branches are in a Fortran-like code, but the structure name and its field are split by a dot. Simulations are carried out in parallel based on OpenMP, and iterations marked by !OMP DO are adequately split by the compiler and carried out in parallel. Calculation of the transition probability places{key = v}.pr is implemented to conform to the diagram of Eq. (2). Figure S2. Age-specific distribution of the population of Tokyo in 2005. We sampled from this distribution to obtain the ages of individuals, and their roles were assigned according to their ages. The proportions of roles in the simulation are represented by different colors (blue: students, red: employees, and yellow: domiciliaries). Figure S3. Distribution of corporation sizes. The rank in the corporation size versus the number of employees. Table S1. List of parameters configuring simulation. (PDF)

As of the fourth quarter of 2023, the rent for stores in Japan was the highest in Tokyo and Yokohama, amounting to around 35.8 thousand Japanese yen per tsubo. The cities of Tokyo and Yokohama are part of the Tokyo Metropolitan Area, which is home to one-third of the population in Japan.

The ongoing multi-wave COVID-19 pandemic has disproportional impacts on people with different demographic and socioeconomic background, and their access to healthcare facilities. Vulnerable neighborhoods with low healthcare access are places most needed for the enhancement of medical resources and services. Measuring vulnerability to COVID-19 and healthcare accessibility at the fine-grained level serves as the foundation for spatially explicit health planning and policy making in response to future public health crisis. Despite of its importance, the evaluation of vulnerability and healthcare accessibility is insufficient in Japan—a nation with high population density and super-aging challenge. Drawing on the latest 2022 census data at the smallest statistical unit, as well as transport network, medical and digital cadastral data, land use maps, and points of interest data, our study reformulates the concept of vulnerability in the context of COVID-19 and constructs the first fine-grained measure of vulnerability and healthcare accessibility in Tokyo Metropolis, Japan—the most popular metropolitan region in the world. We delineate the vulnerable neighborhoods with low healthcare access and further evaluate the disparity in healthcare access and built environment of areas at different levels of vulnerability. Our outcome datasets and findings provide nuanced and timely evidence to government and health authorities to have a holistic and latest understanding of social vulnerability to COVID-19 and healthcare access at a fine-grained level. Our analytical framework can be employed to different geographic contexts, guiding through the place-based health planning and policy making in the post-COVID era and beyond.

■Purpose Facilities managed by businesses that have concluded agreements with municipalities in Tokyo to accept stranded commuters in order to protect them from earthquakes directly beneath the Tokyo Metropolitan area and minimize damage (hereinafter referred to as "private temporary stay facilities".) The purpose of this project is to secure private temporary stay facilities and promote measures for people with difficulty in returning home by subsidizing the cost of purchasing emergency supplies for people with difficulty in returning home and stockpiling supplies and equipment necessary for COVID-19 countermeasures.

■ Overview The program helps families purchase supplies for stranded people and supplies needed to combat COVID-19. (1) The displaced persons stockpiles eligible for the displaced persons stockpiles subsidy are three days' supply of water, food, potties, blankets, mats, diapers, sanitary products, first aid kits, powdered and liquid milk and baby food per displaced 1. The subsidy will cover up to 9,000 JPY per person in 1 who cannot return home, 5/6 of which will be covered. Water and food with a shelf life of five years or more will be subsidized, and the costs required for renewing purchased items subsidized by the Tokyo Metropolitan Government will also be subsidized. (2)Materials and equipment needed to fight COVID-19 The materials and equipment needed to fight COVID-19 eligible for the subsidy are masks, hand sanitizer, eye protection (Goggles, face shield), contact protection (Disposable gloves and gowns), and contactless thermometers (Including non-contact thermometers.). (Simple tent, partition, partition). The subsidy will cover up to 600 JPY per person in 1 who cannot return home, 5/6 of which will be covered. The subsidy covers the quantity needed to accept stranded people for 3 days, and the quantity, unit price and specifications shall be determined in consultation with TMG.

■ Eligible facilities (from (1) to (3)) An agreement must be concluded with the municipality of (1) to accept stranded people. *Tokyo Metropolitan Area (excluding islands) ( 2) Complete 3 days of employee stock. *Complete with the same standard as 1 principle and the standard of stranded people. *The cost of purchasing stockpiles for 2 employees is not covered by this project. *If you receive the subsidy of the equipment for infectious disease control in 3, you also need to prepare the stockpiles for stranded people for 3 days. (3) Has a Business Continuity Plan in place for the operation of the temporary accommodation.

■ Precautions Request before ordering or purchasing.

■ Contact: Disaster Prevention Project Promotion Division, Disaster Management Department, General Affairs Bureau, Tokyo TEL: 03-5388-2485 Mail: S0000040@section.metro.tokyo.jp

■ Related Website Tokyo Disaster Prevention Website https://www.bousai.metro.tokyo.lg.jp/kitaku_portal/1000048/1006430/1007875/index.html

Yamato City(Yamato Shi)'s Population per 1 km2 of inhabitable area is 9,141person which is the 43rd highest in Japan (by City). It also ranks 3rd in Kanagawa Prefecture, with 6.89% share of the entire Kanagawa. Transition Graphs and Comparison chart between Yamato City and Matsumoto City(Nagano) and Chofu City(Tokyo)(Closest City in Population) are available. Various data can be downloaded and output in csv format for use in EXCEL free of charge.

As of 2020, about 29 percent of the population in Japan was concentrated in the Greater Tokyo Area. The three metropolitan areas Tokyo, Osaka, and Nagoya, accounted for around 53 percent of the Japanese population.

's City planning area is 2,059[ha] which is the 1029th highest in Japan (by City). It also ranks 26th in Tokyo Prefecture, with 1.18% share of the entire Tokyo. Transition Graphs and Comparison chart between TokyYO kita ku and Takatsuki City(Osaka) and ShinNJuku ku(Tokyo)(Closest City in Population) are available. Various data can be downloaded and output in csv format for use in EXCEL free of charge.

Isesaki City(Isesaki Shi)'s Population per 1 km2 of inhabitable area is 1,500person which is the 370th highest in Japan (by City). It also ranks 3rd in Gunma Prefecture, with 6.22% share of the entire Gunma. Transition Graphs and Comparison chart between Isesaki City and ArakKAwa ku(Tokyo) and Itami City(Hyogo)(Closest City in Population) are available. Various data can be downloaded and output in csv format for use in EXCEL free of charge.

Ibaraki Prefecture is located in the Kanto region of Japan, and its capital is Mito City, located near the coast. Ibaraki's population is on an upward trend due to the growth of Tokyo's Metropolitan Area, and many people commute from Ibaraki to Tokyo each day. Kairakuen Gardenin Mito City is one out of three of Japan's most celebrated gardens and sees many visitors each year, especially during late February when more than 150 different types of plum trees blossom. Kashima Shrine, another popular destination, sees around 600,000 New Year pilgrims each year. Natto and watermelons are Ibaraki's most famous produce. Mito City even has a museum solely devoted to the favorite fermented soybean dish.

Yachiyo City(Yachiyo Shi)'s Area under urbanization promotion is 2,238[ha] which is the 184th highest in Japan (by City). It also ranks 10th in Chiba Prefecture, with 3.17% share of the entire Chiba. Transition Graphs and Comparison chart between Yachiyo City and TaitTO ku(Tokyo) and Kumagaya City(Saitama)(Closest City in Population) are available. Various data can be downloaded and output in csv format for use in EXCEL free of charge.

Cities ranking and mega citiesTokyo is the world’s largest city with an agglomeration of 37 million inhabitants, followed by New Delhi with 29 million, Shanghai with 26 million, and Mexico City and São Paulo, each with around 22 million inhabitants. Today, Cairo, Mumbai, Beijing and Dhaka all have close to 20 million inhabitants. By 2020, Tokyo’s population is projected to begin to decline, while Delhi is projected to continue growing and to become the most populous city in the world around 2028.By 2030, the world is projected to have 43 megacities with more than 10 million inhabitants, most of them in developing regions. However, some of the fastest-growing urban agglomerations are cities with fewer than 1 million inhabitants, many of them located in Asia and Africa. While one in eight people live in 33 megacities worldwide, close to half of the world’s urban dwellers reside in much smaller settlements with fewer than 500,000 inhabitants.About the dataThe 2018 Revision of the World Urbanization Prospects is published by the Population Division of the United Nations Department of Economic and Social Affairs (UN DESA). It has been issued regularly since 1988 with revised estimates and projections of the urban and rural populations for all countries of the world, and of their major urban agglomerations. The data set and related materials are available at: https://esa.un.org/unpd/wup/