Higashiyamato City Hall
Higashiyamato City Hall
Flag of Higashiyamato
Official seal of Higashiyamato
Location of Higashiyamato in Tokyo Metropolis
Location of Higashiyamato in Tokyo Metropolis
Higashiyamato is located in Japan
Coordinates: 35°44′43.3″N 139°25′35.4″E / 35.745361°N 139.426500°E / 35.745361; 139.426500Coordinates: 35°44′43.3″N 139°25′35.4″E / 35.745361°N 139.426500°E / 35.745361; 139.426500
 • Total13.42 km2 (5.18 sq mi)
 (April 2021)
 • Total85,294
 • Density6,400/km2 (16,000/sq mi)
Time zoneUTC+9 (Japan Standard Time)
- TreeZelkova serrata
- FlowerAzalea
Phone number042-563-2111
Address3-930 Chuo, Higashiyamato-shi, Tokyo-to 207-8585
WebsiteOfficial website

Higashiyamato (東大和市, Higashi-yamato-shi) is a city located in the western portion of Tokyo Metropolis, Japan. As of 1 April 2021, the city had an estimated population of 85,294, and a population density of 6400 persons per km².[1] The total area of the city was 13.42 square kilometres (5.18 sq mi).


Higashiyamato is approximately in the north-center of Tokyo Metropolis, on the Musashino Terrace, bordered by Saitama Prefecture to the north.

Surrounding municipalities

Tokyo Metropolis

Saitama Prefecture


Higashiyamato has a Humid subtropical climate (Köppen Cfa) characterized by warm summers and cool winters with light to no snowfall. The average annual temperature in Higashiyamato is 13.9 °C. The average annual rainfall is 1647 mm with September as the wettest month. The temperatures are highest on average in August, at around 25.4 °C, and lowest in January, at around 2.5 °C.[2]


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

Historical population
1920 5,017—    
1930 5,442+8.5%
1940 8,152+49.8%
1950 12,366+51.7%
1960 14,239+15.1%
1970 46,173+224.3%
1980 65,553+42.0%
1990 75,132+14.6%
2000 77,212+2.8%
2010 83,073+7.6%


The area of present-day Higashiyamato was part of ancient Musashi Province. In the post-Meiji Restoration cadastral reform of April 1, 1889, Takagi Village was established within Kitatama District of Kanagawa Prefecture. The entire district was transferred to the control of Tokyo Prefecture on April 1, 1893. Takagi Village merged with five neighboring villages to form Yamato Village on November 1, 1919. It was elevated to town status on May 3, 1954 and renamed as Higashiyamato on its promotion to a city, on October 1, 1970.

There was a Hitachi Aircraft Company factory located in Higashiyamato during World War II. It was destroyed by US bombing raids. The Former Hitachi Aircraft Tachikawa Factory Transformer Substation was damaged during air attacks but remains as a war memorial.[4]


Higashiyamato has a mayor-council form of government with a directly elected mayor and a unicameral city council of 22 members. Higashiyamato, collectively with Higashimurayama and Musashimurayama contributes three members to the Tokyo Metropolitan Assembly. In terms of national politics, the city is part of Tokyo 20th district of the lower house of the Diet of Japan.


Higashiyamato is primary a regional commercial center, and a bedroom community for central Tokyo.


Higashiyamato has ten public elementary schools and five public middle schools, operated by the city. The city's two public high schools are operated by the Tokyo Metropolitan Government Board of Education.



SeibuRailway mark.svg
- Seibu RailwaySeibu Haijima Line

Tama Toshi Monorail Logo.png
Tama Toshi Monorail Line


Sister city relations

Notable people from Higashiyamato


  1. ^ "Higashiyamato city official statistics" (in Japanese). Japan.
  2. ^ Higashiyamato climate data
  3. ^ Higashiyamato population statistics
  4. ^ "Former Hitachi plane transformer substation". www.city.higashiyamato.lg.jp.e.fp.hp.transer.com. Higashiyamato City. Retrieved May 14, 2017.