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NIPPNATLASAn atlas of all 1,741 municipalities in Japan

Photo: photo: Qurren (トーク) Taken with Canon PowerShot G9 X / CC BY-SA 4.0 · Wikimedia Commons

Gunma Prefecture

Kanto region · Prefecture

Gunma is a "hot spring kingdom" with many famous onsen (hot springs), such as Kusatsu, Ikaho and Shima. It once prospered from sericulture (silkworm raising) and silk reeling, and Tomioka Silk Mill is a World Heritage Site that symbolizes the modernization of Japan. Gunma is also known for growing konjac potatoes.

Kusatsu Onsen
Tomioka Silk Mill (World Cultural Heritage Site)
Konjac
Karakkaze (the dry winter wind of Joshu)

Key facts

Prefectural capital: Maebashi City
Municipalities: 35 (12 cities, 15 towns, 8 villages)
Population: 1,865,934 18th in Japan2025 Census
5-year change: −3.8% 32nd in Japanfrom 1,939,110 in 2020
Area: 6,362 km² 21st in Japan
Population density: 293 people/km² 20th in Japan

Source: Statistics Bureau of Japan, 2025 Population Census (population, area and density); area from the Geospatial Information Authority of Japan (GSI), Area Statistics of Prefectures and Municipalities (2025). National ranks are among the 47 prefectures, ordered by this site from these values.

Places to know

Kusatsu Town The Yubatake (hot water field), where abundant hot spring water flows out.
Takasaki City A producer of daruma dolls and a transport hub.
Minakami Town A mountain resort with Mt. Tanigawa, rafting and hot springs.

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Places to visit in Gunma Prefecture

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Chosen automatically, most popular first, from landmarks and cultural properties registered in Wikidata (we have not checked whether each is open). Names and descriptions: Wikidata (CC0); photos: Wikimedia Commons (photographer and license under each photo).

National parks in Gunma Prefecture

Oze National ParkTotal park area 372 km²Also in Fukushima, Tochigi, Niigata
Nikko National ParkTotal park area 1,149 km²Also in Fukushima, Tochigi
Joshin'etsukogen National ParkTotal park area 1,511 km²Also in Niigata, Nagano

Chosen by overlaying the park boundaries (Ministry of the Environment, Biodiversity Center of Japan, "National Park Areas" GIS data, updated April 28, 2025, combined and simplified by NIPPON ATLAS) with municipal boundaries (National Land Numerical Information, January 2021), keeping overlaps of about 0.5 km² or more (approximate). Areas are the land areas from the Ministry of the Environment, "Overview of National Parks" (April 10, 2026). All national parks

Municipalities in Gunma Prefecture (35)

Municipality	Population	5-year change	Area
Maebashi City	324,191	−2.4%	312 km²
Takasaki City	363,477	−2.5%	459 km²
Kiryu City	97,127	−8.8%	274 km²
Isesaki City	208,069	−1.8%	139 km²
Ota City	219,322	−1.7%	176 km²
Numata City	41,187	−9.2%	443 km²
Tatebayashi City	72,780	−3.4%	60.97 km²
Shibukawa City	70,265	−5.8%	240 km²
Fujioka City	59,416	−6.1%	180 km²
Tomioka City	43,771	−7.7%	123 km²
Annaka City	50,840	−7.4%	276 km²
Midori City	47,420	−4.5%	208 km²
Shinto Village	14,116	−0.7%	27.92 km²
Yoshioka Town	22,885	+5.0%	20.46 km²
Ueno Village	970	−14.0%	182 km²
Kanna Town	1,317	−19.9%	115 km²
Shimonita Town	5,492	−16.5%	188 km²
Nanmoku Village	1,260	−21.8%	119 km²
Kanra Town	11,938	−4.4%	58.61 km²
Nakanojo Town	13,914	−9.6%	439 km²
Naganohara Town	4,839	−5.0%	134 km²
Tsumagoi Village	8,164	−7.8%	338 km²
Kusatsu Town	5,753	−4.9%	49.75 km²
Takayama Village	3,097	−11.8%	64.18 km²
Higashiagatsuma Town	11,237	−11.7%	254 km²
Katashina Village	3,543	−11.3%	392 km²
Kawaba Village	3,154	−9.4%	85.25 km²
Showa Village	6,689	−3.8%	64.14 km²
Minakami Town	15,740	−8.5%	781 km²
Tamamura Town	35,004	−2.9%	25.78 km²
Itakura Town	12,655	−10.1%	41.86 km²
Meiwa Town	10,291	−5.4%	19.64 km²
Chiyoda Town	10,334	−4.9%	21.73 km²
Oizumi Town	41,417	−1.6%	18.03 km²
Ora Town	24,260	−4.9%	31.11 km²

Source: Statistics Bureau of Japan, 2025 Population Census (population in 2025; change compared with 2020). Area: GSI (2025). Designated cities are shown as one city (wards combined). "Temperature now" is the latest JMA AMeDAS observation (preliminary) at the nearest station in the same prefecture, loaded and shown unchanged when you open the page.

Figures come from official Japanese statistics (such as the 2025 Census by the Statistics Bureau of Japan), with the source and year shown next to each one. Photos are freely licensed images from Wikimedia Commons; the photographer and license are shown under each photo.

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