Tokyo (東京)

Tokyo (東京) is the capital of Japan and the seat of the Tokyo Metropolitan Government, a metropolis (都, to) that covers 23 special wards, the Tama area, and two Pacific island groups. As of October 1, 2025, its population was estimated at 14.273 million, about 11.6% of Japan's total, the largest of all 47 prefectures on only 0.6% of the national land area.¹ Its wider metropolitan area holds roughly 37.2 million people.²

History

From Edo to the capital. The city's recorded urban history spans about 400 years. Originally named Edo, it began to flourish after Tokugawa Ieyasu established the Tokugawa Shogunate there in 1603. As the center of politics and culture, Edo grew to more than one million residents by the mid-eighteenth century, while the Emperor resided in Kyoto, the formal capital.¹ A census conducted in 1721 put Edo's population at about 1.3 million.¹ The Meiji Restoration of 1868 ended the shogunate, and an imperial edict of July 17, 1868 renamed the city Tokyo, meaning "Eastern capital"; the Emperor moved to Edo, which became the capital of Japan.^{1 • 4}

Modernization and disaster. During the Meiji era (1868–1912) the city absorbed Western technology and institutions: Japan's first telecommunications line opened between Tokyo and Yokohama in 1869, the first railway ran from Shimbashi to Yokohama in 1872, and after a great fire in 1872 the government built the Ginza "Bricktown" as a fire-resistant Western-style district.^{1 • 7} The Great Kanto Earthquake of September 1923 burned the city center to the ground, killing about 140,000 people and destroying about 300,000 houses; the reconstruction plan that followed, though only partly realized, established the basic framework of Tokyo's current urban infrastructure.¹ Japan's first subway line opened between Asakusa and Ueno in 1927, Haneda Airport was completed in 1931, and by 1935 the resident population had reached 6.36 million, comparable to New York and London.¹

War and reconstruction. In 1943 the prefecture and city were merged into the Metropolis of Tokyo under an appointed governor for wartime efficiency.^{1 • 3} Tokyo was bombed 102 times in the war's final phase, with the heaviest air raid on March 10, 1945; by October 1945 the population had fallen to 3.49 million, half its 1940 level.¹ The present 23 special-ward system began in August 1947, and Seiichiro Yasui was elected the first governor by popular vote that year under the new Local Autonomy Law.¹

Postwar growth. The population passed 10 million in 1962, and 1964 brought the Olympic Games, the first Shinkansen line, and the Metropolitan Expressway.¹ Land and stock prices spiraled upward from 1986 in the "bubble economy," whose collapse at the start of the 1990s pushed metropolitan finances into crisis, resolved through two successive fiscal reconstruction programs.¹ The population reached 12 million in 2000, 13 million in 2009, and passed 14 million in 2019.¹ Tokyo hosted the Olympic and Paralympic Games a second time in 2021, after a one-year postponement and without spectators because of COVID-19.¹

Geography and administration

Tokyo Metropolis lies in the southern Kanto region, near the center of the Japanese archipelago, bordered by Chiba Prefecture to the east, Yamanashi to the west, Kanagawa to the south, and Saitama to the north.¹ It is a metropolitan prefecture comprising 23 special wards (ku), 26 cities (shi), 5 towns (machi), and 8 villages (mura).¹ The special wards hold the same legal municipality status as cities but operate under a unique administrative arrangement with the metropolitan government, reflecting their dense population and urban contiguity.⁸

The metropolis divides into three parts. The 23-ward area covers about 628 km² with 9.95 million residents (about 15,853 per km²) and concentrates government offices, corporations, and commercial and cultural facilities. The Tama area covers about 1,160 km² with 4.30 million people (about 3,710 per km²) and mixes natural environment, historic sites, and technology companies and universities. The Izu and Ogasawara island groups cover about 413 km² with only 22,000 residents (54 per km²); they include Okinotorishima, Japan's southernmost islands, with an exclusive economic zone of about 400,000 km².¹

The Tokyo Megalopolis Region, or Greater Tokyo Area, adds the three neighboring prefectures of Saitama, Chiba, and Kanagawa and is home to around 30% of Japan's population; the National Capital Region adds four more prefectures.¹

Population dynamics

Growth has ended, but migration sustains the total. Tokyo's first natural population decline came in 2012, after a peak net natural increase of 182,000 in 1968. In 2024 the metropolis recorded about 89,000 births and 141,000 deaths, a net natural decrease of 52,000, offset by a net social increase of 76,000 (460,000 arrivals against 384,000 departures).¹ Net out-migration to other prefectures prevailed from 1967 until 1997, with exceptions in 1984 and 1985, and net inflow has continued since.¹ Foreign residents numbered 772,000 as of October 1, 2025.¹

Aging and commuting. The 2020 census recorded 14.0476 million residents, split 11.2% children (0–14), 66.1% working age (15–64), and 22.7% aged 65 and over; Tokyo passed the 14% threshold of an "aged society" in 1998 and is now a "super-aged society."¹ The daytime population of 16.752 million exceeds the resident count by 2.704 million, driven by commuters and students from the three neighboring prefectures. The imbalance is extreme in the three central wards of Chiyoda, Chuo, and Minato, where 496,000 residents are joined by a daytime population of 3.123 million.¹

Urban form and transport

Car ownership is suppressed by policy and cost. To register a vehicle, residents must show a private parking space; owning and using a car are taxed, and highways charge tolls.⁶ Tokyo introduced a low-emission zone in 2003, earlier than London, Berlin, or Amsterdam, which followed in the 2010s.⁶

Public transport ridership has not fully recovered from the pandemic: in Tokyo, ridership in 2021 was the same as in 2005, a stagnation attributed in part to remote work, e-commerce, and fewer daily trips.⁶ Disaster preparedness is central to the city's operating model, with earthquake, flood, and heat planning embedded in infrastructure programs.²

Global standing

In the Oxford Economics 2026 Global Cities Index, which benchmarks 1,000 cities across economics, human capital, quality of life, environment, and governance, Tokyo ranked ninth with a score of 89.5, behind New York, London, Paris, Seattle, San Francisco, Dublin, Boston, and San Jose.⁵ The same analysis places Tokyo among the megacities whose housing costs relative to incomes make the quality-of-life and affordability mix less desirable than that of smaller Asia-Pacific cities.⁹ The Tokyo Metropolitan Government's FY 2026 budget projects metropolitan tax revenues of 7,385.6 billion yen, up 6.6% from the previous initial budget, and allocates 38.9 billion yen across 242 AI-related projects as part of the Tokyo 2050 Strategy.¹⁰

References

1. Tokyo's History, Geography, and Population, Tokyo Metropolitan Government
2. Tokyo, Japan City Intelligence: Scores, Data and Rankings, Global City Intelligence
3. Issuance Conditions of the Bonds Pertaining to the Tokyo Metropolitan Government, JPX
4. Tokyo 150 Years, Edo-Tokyo Museum
5. 2026 Global Cities Index, Oxford Economics
6. How Paris, New York and Tokyo are all moving away from car-centric urban planning, Le Monde
7. Permanent Exhibition, Edo-Tokyo Museum
8. The Structure of the Tokyo Metropolitan Government (TMG), TMG
9. The world's best value cities in 2026, Oxford Economics
10. Summary of the Tokyo Metropolitan Government Budget Proposal FY 2026, TMG

Initially written Sep 17, 2026 · Reviewed: Sep 18, 2026; Sep 30, 2026; Oct 21, 2026 · Edited: Sep 18, 2026; Sep 30, 2026; Oct 21, 2026

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