Tama City Hall
Tama City Hall
Flag of Tama
Official seal of Tama
Location of Tama in Tokyo
Location of Tama in Tokyo
Tama is located in Japan
Coordinates: 35°38′13″N 139°26′46.6″E / 35.63694°N 139.446278°E / 35.63694; 139.446278Coordinates: 35°38′13″N 139°26′46.6″E / 35.63694°N 139.446278°E / 35.63694; 139.446278
 • Total21.01 km2 (8.11 sq mi)
 (March 2021)
 • Total148,285
 • Density7,100/km2 (18,000/sq mi)
Time zoneUTC+9 (Japan Standard Time)
• TreeGinkgo biloba
• FlowerPrunus serrulata
• BirdOriental turtle dove
Phone number042-375-8111
Address6-12-1 Sekido, Tama-shi, Tokyo 206-8666
WebsiteOfficial website
View of Tama River and Seiseki Sakuragaoka
View of Tama River and Seiseki Sakuragaoka
Tama-Center Station and its surroundings, May 2013
Tama-Center Station and its surroundings, May 2013

Tama (多摩市, Tama-shi) is a city located in the western portion of Tokyo Metropolis, Japan. As of 11 March 2021, the city had an estimated population of 148,285 in 73,167 households, and a population density of 7,100 inhabitants per square kilometre (18,000/sq mi).[1] The total area of the city was 21.01 square kilometres (8.11 sq mi).


Tama is located in the foothills of the Okutama Mountains of southwestern Tokyo, known as Tama Hills, which spans Tokyo and Kanagawa Prefecture. The entire region is historically referred to as Tama; therefore there are many place names scattered throughout the area with references to the name "Tama" which are not within the city limits. The Tama River marks the city's northern boundary, and Kanagawa Prefecture is to the south. Its southern half forms part of the Tama New Town project, Japan's largest residential development, constructed in the 1970s.

Surrounding municipalities

Tokyo Metropolis

Kanagawa Prefecture


Tama has a Humid subtropical climate (Köppen Cfa) characterized by warm summers and cool winters with light to no snowfall. The average annual temperature in Tama is 14.0 °C. The average annual rainfall is 1647 mm with September as the wettest month. The temperatures are highest on average in August, at around 25.3 °C, and lowest in January, at around 2.8 °C.[2]


Per Japanese census data,[3] the population of Tama increased very rapidly in the 1970s and 1980s.

Historical population
1920 4,111—    
1930 4,497+9.4%
1940 5,158+14.7%
1950 7,394+43.4%
1960 9,746+31.8%
1970 30,672+214.7%
1980 95,248+210.5%
1990 144,489+51.7%
2000 145,862+1.0%
2010 147,541+1.2%
2020 146,951−0.4%



Tama has a mayor-council form of government with a directly elected mayor and a unicameral city council of 26 members. Tama, together with the city of Inagi, contributes two members to the Tokyo Metropolitan Assembly. In terms of national politics, the city is divided between Tokyo 21st district and Tokyo 23rd district of the lower house of the Diet of Japan.


In 2018, an activist named Michihito Matsuda ran for mayor in the Tama city area of Tokyo as a human proxy for an artificial intelligence program.[4] While election posters and campaign material used the term robot, and displayed stock images of a feminine android, the "AI mayor" was in fact a machine learning algorithm trained using Tama city datasets.[5] The project was backed by high-profile executives Tetsuzo Matsumoto of Softbank and Norio Murakami of Google.[6] Michihito Matsuda came third in the election, being defeated by Hiroyuki Abe.[7] Organisers claimed that the 'AI mayor' was programmed to analyze citizen petitions put forward to the city council in a more 'fair and balanced' way than human politicians.[8] In 2022, Michihito Matsuda made the campaign pledge to install THXU token into Tama city's further development as one of Government_by_algorithm.[9]


Several companies have their headquarters in the city:


Universities and colleges

Elementary and secondary schools



KeioRailway logo.svg
Keio Corporation - Keiō Line

KeioRailway logo.svg
Keio Corporation - Keiō Sagamihara Line

Odakyu electric railway company logos.svg
Odakyu Electric Railway - Odakyū Tama Line

Tama Toshi Monorail Logo.png
Tama Monorail


Tama is not served by any national expressways or national highways

Military facilities

Local attractions

Sister cities


  1. ^ "Tama city official statistics" (in Japanese). Japan.
  2. ^ Tama climate data
  3. ^ Musashino population statistics
  4. ^ "POLITICS 2028: WHY ARTIFICIAL INTELLIGENCE WILL REPLACE POLITICIANS b…". SlideShare. 14 July 2018. Retrieved 22 September 2019.
  5. ^ Johnston, Lachlan (12 April 2018). "There's an AI Running for the Mayoral Role of Tama City, Tokyo". OTAQUEST. Retrieved 22 September 2019.
  6. ^ "AI党 | 多摩市議会議員選挙2019". AI党 | 多摩市議会議員選挙2019.
  7. ^ "Werden Bots die besseren Politiker?". Politik & Kommunikation (in German). Retrieved 31 October 2020.
  8. ^ O'Leary, Abigail; Verdon, Anna (April 17, 2018). "Robot to run for mayor in Japan promising 'fairness and balance' for all". mirror.
  9. ^ "Michihito Matsuda to run to the mayoral election in Tama city, Tokyo". THE MAINICHI NEWSPAPERS (in Japanese). Retrieved 27 March 2022.
  10. ^ "Company Information." Mitsumi Electric Retrieved on June 16, 2015.
  11. ^ "Corporate Outline." JUKI Retrieved on August 4, 2015.
  12. ^ http://www.nagayama-h.metro.tokyo.jp/