Setagaya has the largest population and second-largest area (after Ōta) of Tokyo's special wards. As of July 1, 2023, the ward has an estimated population of 940,071, and a population density of 16,194 persons per km2 with the total area of 58.06km2.
Life expectancy
As of 2023, the female life expectancy in Setagaya is 88.9 years.
Setagaya's residential population size is among the highest in Tokyo as there are many residential neighbourhoods within the ward. Setagaya is served by various rail services providing frequent two- to three-minute headway rush-hour services to the busiest train terminals of Shinjuku and Shibuya as well as through service trains which continue travelling on to the Tokyo Metro lines providing direct access to the central commercial and business districts. Most rail lines run parallel from east to west and there are no north to south rail services within Setagaya, except for Setagaya Line light rail.
The ward is divided into five districts. These are Setagaya, Kitazawa, Tamagawa, Kinuta and Karasuyama. The main ward office and municipal assembly (city hall) is located in Setagaya District, but other districts also have their own branch ward offices as a part of the administrative structure. Each branch office provides almost identical services as the main office, but does not provide the services related to municipal assembly.
Most of the land is in the Musashino Tableland. The parts along the Tama River to the south are comparatively low-lying.
History
The special ward of Setagaya was founded on March 15, 1947.
During the Edo period, 42 villages occupied the area. With the abolition of the han system in 1871, the central and eastern portions became part of Tokyo Prefecture while the rest became part of Kanagawa Prefecture; in 1893, some areas were transferred to Tokyo Prefecture. With the establishment of Setagaya Ward (an ordinary ward) in the old Tokyo City in 1932, and further consolidation in 1936, Setagaya took its present boundaries.
During the 1964 Summer Olympics, the district of Karasuyama-machi in Setagaya was part of the athletics marathon and 50km walk event.
↑NHK Broadcasting Culture Research Institute, ed. (June 20, 2025) [25 May 2016]. NHK日本語発音アクセント新辞典 (in Japanese) (15thed.). Shibuya, Tokyo: NHK Publishing. p.731. ISBN978-4-14-011345-5.
↑"Facilities and LocationArchived 2015-02-27 at the Wayback Machine." British School in Tokyo. Retrieved on March 8, 2015. "BST Shibuya Campus – (Nursery to Year 3) Address: 1–21–18 Shibuya Shibuya-ku Tokyo 150-0002" (MapArchived October 3, 2015, at the Wayback Machine) and "BST Showa Campus – (Year 4 to Year 13) Address: Showa Women's University 5th Bldg. 1–7–57 Taishido Setagaya-ku Tokyo 154-8533"
↑ウリハッキョ一覧. Chongryon. November 6, 2005. Archived from the original on November 6, 2005. Retrieved October 15, 2015.
↑"バンバリー市(オーストラリア・西オーストラリア州)" (in Japanese). Setagata City Government. October 16, 2023. Retrieved October 25, 2023.
↑"ドゥブリング区(オーストリア・ウィーン市)" (in Japanese). Setagata City Government. April 1, 2022. Retrieved October 25, 2023.
↑"ウィニペグ市（カナダ・マニトバ州）" (in Japanese). Setagata City Government. April 1, 2022. Retrieved October 25, 2023.
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