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Gunma Prefecture

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Gunma Prefecture is a landlocked region located in the Kantō region of Honshu, Japan.

Map of Gunma Prefecture Ja
Map of Gunma Prefecture Ja

Being landlocked means it has no direct access to the ocean. It sits on the northwestern corner of the Kantō Plain. Gunma is one of only eight landlocked prefectures in the entire country. It is surrounded by several other prefectures. Niigata and Fukushima lie to the north. Tochigi is to the east. Saitama is to the south. Nagano is located to the southwest. Much of the land is mountainous.

Mt.Nakanodake from Mt.Shibutsu 01
Mt.Nakanodake from Mt.Shibutsu 01

About 14% of the total land area is designated as natural parks. These include the Jōshin'etsu-kōgen, Nikkō, and Oze National Parks. The Myōgi-Arafune-Saku Kōgen is also a Quasi-National Park.

The climate in Gunma is shaped by its inland position. There is a large difference in temperature between summer and winter. The region also receives less precipitation than coastal areas. This is caused by the karakkaze, or "empty wind." This is a strong, dry wind that occurs during the winter. It happens because the Echigo Mountains obstruct snow clouds from the coast. The mountains block the clouds, but the wind passes through. This makes the winter air very dry. Summer temperatures can be extreme. On August 5, 2025, the city of Isesaki recorded 41.8 °C. This was the hottest temperature ever registered in Japanese history.

Gunma has a deep and complex history. In ancient times, the province was a center for horse breeding. It was also a hub for trading activities. This was important for the Toraijin, who were newly immigrated continental peoples. The arrival of horses changed Japanese military history. Horses allowed for new military maneuvers. This displaced the older Yayoi tradition of fighting on foot. In the late 6th century, Mount Haruna erupted. This happened during Japan's pre-historical phase. Scientists used zoological anthropology to date this event. They studied animal pens that were buried in ash. In the past, the area was part of Kenu Province. This was later divided into Kami-tsu-ke and Shimo-tsu-ke.

The region has seen many industrial and political shifts. In the 1870s, the first modern silk factories were built in Annaka. These were constructed with assistance from Italy and France. During the early Meiji period, a conflict called the Gunma Incident occurred in 1884. This was a struggle between democratic Westernisers and conservative nationalists. In the twentieth century, the Nakajima Aircraft Company was founded in Oizumi. Its founder was the aviation pioneer Nakajima Chikushi. The company became a world leader in aeronautical design by 1931. Today, the factory is known as Subaru. It is part of Fuji Heavy Industries and produces motorcars in Ōta.

Today, the population of Gunma is 1,937,626 as of October 2019.

Gunma prefecture population pyramid in 2020
Gunma prefecture population pyramid in 2020

The prefecture is divided into several administrative areas. Maebashi is the capital city. Takasaki is the largest city. Other major cities include Ōta, Isesaki, and Kiryū. There are twelve cities in total. The economy relies on both modern and traditional industries. Transport and electrical equipment are major modern sectors. These are concentrated near Maebashi and the eastern region. Agriculture remains vital to the local economy. Gunma produces over 90% of Japan's konnyaku. The village of Tsumagoi is also known for cabbage farming. Two-thirds of its farms grow this crop.

Gunma offers unique cultural experiences for visitors. One interesting feature is the presence of melody roads. There are eleven of these roads in the prefecture. These roads have grooves cut into the surface. There are 2,559 grooves in a 175-meter stretch. These grooves transmit vibrations through the car wheels. This creates music as the vehicle moves. Different roads play different songs. For example, the road in Nakanojo plays music from "Spirited Away" at 40 km/h. The road in Katashina plays a song at 50 km/h.

Akagiyama ono
Akagiyama ono

Visitors also travel to famous hot spring resorts. Kusatsu Onsen is the most famous destination. Many people also visit for the mountain ski resorts.

Sports and local symbols are also prominent in Gunma. The prefecture has teams for baseball, football, and rugby.

Shikishima rikujo 2
Shikishima rikujo 2

For example, the Panasonic Wild Knights play rugby in Ōta. The local government uses a mascot named Gunma-chan. It is a small, stylized drawing of a horse. The character wears a green cap. It appears on many public signs and promotional posters. The prefectural symbol also features three mountains. These represent Mount Haruna, Mount Akagi, and Mount Myōgi. These landmarks are central to the identity of the region.

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🖼️ Images & Media (5)
File:Akagiyama ono.jpg
Akagiyama ono.jpg
File:Mt.Nakanodake from Mt.Shibutsu 01.jpg
Mt.Nakanodake from Mt.Shibutsu 01.jpg
File:Map of Gunma Prefecture Ja.svg
Map of Gunma Prefecture Ja.svg
File:Gunma prefecture population pyramid in 2020.svg
Gunma prefecture population pyramid in 2020.svg
File:Shikishima rikujo 2.JPG
Shikishima rikujo 2.JPG
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