Formerly, Gunma and Tochigi was known as Kenu Province. It was later divided into Gunma-ken and Tochigi-ken. For most of Japanese history, Gunma was known as Kozuke Prefecture.
As of April 2012, 14% of the province’s total area has been designated as Natural Parks. The biggest mountains in Gunma are Mounts Akagi, Haruna, Myogi, Nikko-Shirane and Asama, which borders Nagano. The first three are known as the Three Mountains of Jomo, and the largest rivers are the Tone, Agatsuma and Karasu.
Annaka, Fujioka, Isesaki, Kiryu, Maebashi (capital), Midori, Numata, Ota, Shibukawa, Takasaki, Tatebayashi, Tomioka.
Chiyoda, Higashiagatsuma, Itakura, Kanna, Kanra, Katashina, Kawaba, Kusatsu, Meiwa, Minakami, Naganohara, Nakanojo, Nanmoku, Oizumi, Ora, Shimonita, Shinto, Showa, Takayama, Tamamura, Tsumagoi, Ueno, Yoshioka.