Higashimurayama is a city located in the western portion of Tokyo Metropolis, Japan. As of 1 March 2021, the city had an estimated population of 148,275, and a population density of 8700 persons per km2. The total area of the city is 17.14 square kilometres (6.62 sq mi).

The Musashino Line is a railway line operated by the East Japan Railway Company. It links Tsurumi Station in Yokohama with Nishi-Funabashi Station in Chiba Prefecture, forming a 100.6 km (62.5 mi) unclosed loop around central Tokyo. Passenger operations are limited to the 71.8 km (44.6 mi) portion between Fuchūhommachi and Nishi-Funabashi; the Tsurumi to Fuchūhommachi portion, called the "Musashino South Line", is normally used only by freight trains. The line forms part of what JR East refers to as the "Tokyo Mega Loop" around Tokyo, consisting of the Keiyō Line, Musashino Line, Nambu Line, and Yokohama Line.