Higashimurayama is located on the eastern edge of the Sayama Hills, almost in the center of theMusashino Terrace. Most of the city area is flat, except for the northwestern hills.
Higashimurayama has ahumid subtropical climate (KöppenCfa) characterized by warm summers and cool winters with light to no snowfall. The average annual temperature in Higashimurayama 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 25.7 °C, and lowest in January, at around 2.3 °C.[2]
In the post-Meiji Restoration cadastral reform of April 1, 1889, several villages merged to form Higashimurayama Village in Kitatama District, at that time part ofKanagawa Prefecture. The entire district was transferred to the control of Tokyo Prefecture(東京府) on April 1, 1893. On April 1, 1942, Higashimurayama Village became the town of Higashimurayama. On April 1, 1964, Higashimurayama was elevated to city status.
Higashimurayama has amayor-council form of government with a directly elected mayor and aunicameral city council of 25 members. Higashimurayama, collectively with Higashiyamato and Musashimurayama, contributes three members to the Tokyo Metropolitan Assembly. In terms of national politics, the city is part ofTokyo 20th district of thelower house of theDiet of Japan.
Higashimurayama was formerly an agricultural area, and was noted for its production ofsweet potatoes. It is now primary a regional commercial center, and abedroom community for central Tokyo.