Prefecture of Japan
Gunma
群馬県Gunma is a prefecture of Japan. It covers about 6,340 km² (2,450 mi²), the 22nd largest of the 47 prefectures in Natural Earth’s file for Japan, and 1.11× the size of Brunei. About 1.9 million people live there (Wikidata, 2021).
50 km
- Gunma
- Brunei
Facts
| Area, measured | 6,340 km²2,450 mi² |
|---|---|
| Official area | 6,360 km²Wikidata · agrees with our measure |
| Share of Japan | 1.7%of the area of the 47 prefectures |
| Rank by area | 22nd of 47prefectures of Japan |
| Population | 1.9 millionWikidata, 2021 |
| Density | 305 people per km² |
| Capital | Maebashi |
| Latitude range | 36°N to 37°N |
| Type | PrefectureJP-10 |
What the numbers say about Gunma
- Gunma covers 1.7% of the area of Japan and ranks 18th of 47 by population, against 22nd by area.
- It would take 58.9 prefectures the size of Gunma to cover Japan.
- The largest, Hokkaido (Japan), is 12.4× the size of Gunma; the smallest, Kagawa, is 29% of it.
- Closest in size within Japan: Ibaraki (6,340 km², 1.00×) and Tochigi (6,480 km², 1.02×).
- Counted as a country, Gunma would be larger than 69 of the 239 countries and territories listed on sizeversus, and would rank 171st by area, between French Southern and Antarctic Lands (6,990 km²) and Palestine (6,070 km²).
- With 1.9 million people it would rank 149th of 238 by population.
- Gunma has 305 people per km², about the density of El Salvador, which has 294 per km².
- That makes Gunma the 19th most densely populated of the 47 prefectures, 90% of the average for Japan (338 per km²).
- On a standard web map (Web Mercator), a place at 36°N is drawn about 1.5× too large in area, so Gunma looks bigger there than it is.
- Laid out flat, Gunma stretches about 119 km north to south and 116 km east to west.
- Wikidata's official figure of 6,360 km² agrees with our measured area of 6,340 km², to within 2%.
About the same size as
Beside the regions of other countries
The closest region by area and by people in each of the other countries that have regional pages here, within a factor of 2. All 395 regions side by side.
- ChinaAreaShanghai0.94× · 6,750 km²PeopleTibet53% · 3.6 million (2020)
- United StatesAreaDelaware1.23× · 5,170 km²PeopleNebraska0.99× · 2.0 million (2020)
- IndiaAreaSikkim0.91× · 6,940 km²PeopleNagaland0.98× · 2.0 million (2011)
- GermanyAreanone within 2×PeopleHamburg1.02× · 1.9 million (2022)
- FranceAreaCorsica (France)73% · 8,670 km²PeopleCentre-Val de Loire75% · 2.6 million (2022)
- ItalyAreaLiguria1.15× · 5,490 km²PeopleCalabria0.99× · 1.9 million (2019)
- SpainAreaBasque Country90% · 7,060 km²PeopleCastilla–La Mancha0.92× · 2.1 million (2024)
- BrazilAreaFederal District1.09× · 5,790 km²PeopleSergipe88% · 2.2 million (2022)
- CanadaAreaPrince Edward Island1.11× · 5,730 km²PeopleManitoba1.44× · 1.3 million (2021)
- AustraliaAreanone within 2×PeopleSouth Australia1.02× · 1.9 million (2024)
- MexicoAreaColima1.08× · 5,880 km²PeopleMorelos0.98× · 2.0 million (2020)
- ThailandAreaLopburi0.98× · 6,480 km²PeopleUbon Ratchathani1.04× · 1.9 million (2020)
Where Gunma sits in Japan
All 47 drawn on one equal-area map, so sizes are comparable. Select another to open it.
Compare Gunma
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Sources and method
- Outline
- Natural Earth, 1:10m Admin 1 - States, Provinces, public domain
- Boundary
- De facto, as drawn by Natural Earth.
- Area
- Measured on the WGS84 ellipsoid from the full-detail outline, shown rounded. The region’s whole area is counted, every island included.
- Official figures
- Area, population and capital from Wikidata (CC0), fetched 2026-11-12
- Population
- Wikidata, 2021. Japan’s units share the 2021 figures where Wikidata has them; the year is shown wherever the figure is.
- Matching
- Countries come from Natural Earth’s country file. Places whose status is contested and dependencies are never used as automatic matches. A region under 2,500 km² is matched against the small countries and island nations.
- Data built
- 2026-11-12