[2] Harumi is located on reclaimed land, created by dropping earth and sediment generated from expanding Tokyo Bay.

Before an official name was decided for the district, it was called Tsukishima No.

On July 15, 1937 the area was named Harumi-cho by local residents.

The district was designated to host celebrations of the 2600th anniversary of the founding of Japan (by the mythical emperor Jimmu), but celebrations (scheduled to take place in 1940) were canceled due to Japan being at war with the Republic of China and occupation of the Korean Peninsula.

The number of households and population of each chōme as of December 1, 2019 are as follows:[4] Public elementary and junior high schools are operated by Chuo City Board of Education.