Midori Ward is located in an inland area of southeastern Chiba city.

Chiba Prefecture During the Edo period, Midori-ku was the location of the jin'ya of Oyumi Domain, a feudal domain ruled by the Morikawa clan from 1627 until 1871 under the Tokugawa shogunate.

On February 11, 1955, the city of Chiba annexed Oihama, Shiina and Honda.

Midori Ward is largely a regional commercial center and bedroom community for central Chiba and Tokyo.

Municipal elementary and junior high schools are operated by the Chiba City Board of Education (千葉市教育委員会).