Maebashi is the capital city of Gunma Prefecture, in the northern Kantō region of Japan. As of 31 August 2020, the city had an estimated population of 335,352 in 151,171 households, and a population density of 1100 persons per km2. The total area of the city is 311.59 km2 (120.31 sq mi). It was the most populous city within Gunma Prefecture until Takasaki merged with nearby towns between 2006 and 2009. Maebashi is known to be the "City of Water, Greenery and Poets" because of its pure waters, its rich nature and because it gave birth to several Japanese contemporary poets, such as Sakutarō Hagiwara.

Gunma Prefecture is a landlocked prefecture of Japan located in the Kantō region of Honshu. Gunma Prefecture has a population of 1,937,626 and has a geographic area of 6,362 km2. Gunma Prefecture borders Niigata Prefecture and Fukushima Prefecture to the north, Nagano Prefecture to the southwest, Saitama Prefecture to the south, and Tochigi Prefecture to the east.