Prefecture of Japan
Yamaguchi
山口県Yamaguchi is a prefecture of Japan. It covers about 6,020 km² (2,320 mi²), the 24th largest of the 47 prefectures in Natural Earth’s file for Japan, and 1.05× the size of Brunei. About 1.3 million people live there (Wikidata, 2021).
50 km
- Yamaguchi
- Brunei
Facts
| Area, measured | 6,020 km²2,320 mi² |
|---|---|
| Official area | 6,110 km²Wikidata · agrees with our measure |
| Share of Japan | 1.6%of the area of the 47 prefectures |
| Rank by area | 24th of 47prefectures of Japan |
| Population | 1.3 millionWikidata, 2021 |
| Density | 222 people per km² |
| Capital | Yamaguchi |
| Latitude range | 34°N to 35°N |
| Type | PrefectureJP-35 |
What the numbers say about Yamaguchi
- Yamaguchi covers 1.6% of the area of Japan and ranks 27th of 47 by population, against 24th by area.
- It would take 62.0 prefectures the size of Yamaguchi to cover Japan.
- The largest, Hokkaido (Japan), is 13.1× the size of Yamaguchi; the smallest, Kagawa, is 31% of it.
- Closest in size within Japan: Mie (5,820 km², 1.03×) and Ibaraki (6,340 km², 1.05×).
- Counted as a country, Yamaguchi would be larger than 68 of the 239 countries and territories listed on sizeversus, and would rank 172nd by area, between Palestine (6,070 km²) and Brunei (5,720 km²).
- With 1.3 million people it would rank 159th of 238 by population.
- Yamaguchi has 222 people per km², about the density of Dominican Republic, which has 222 per km².
- That makes Yamaguchi the 28th most densely populated of the 47 prefectures, 66% of the average for Japan (338 per km²).
- On a standard web map (Web Mercator), a place at 34°N is drawn about 1.5× too large in area, so Yamaguchi looks bigger there than it is.
- Laid out flat, Yamaguchi stretches about 100 km north to south and 148 km east to west.
- Wikidata's official figure of 6,110 km² agrees with our measured area of 6,020 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.
- ChinaAreaShanghai89% · 6,750 km²Peoplenone within 2×
- United StatesAreaDelaware1.16× · 5,170 km²PeopleMaine0.98× · 1.4 million (2020)
- IndiaAreaSikkim87% · 6,940 km²PeopleArunachal Pradesh0.97× · 1.4 million (2011)
- GermanyAreanone within 2×PeopleMecklenburg-Western Pomerania85% · 1.6 million (2022)
- FranceAreaCorsica (France)69% · 8,670 km²PeopleRéunion (France)1.52× · 881,000 (2022)
- ItalyAreaLiguria1.10× · 5,490 km²PeopleAbruzzo1.02× · 1.3 million (2019)
- SpainAreaCantabria1.13× · 5,350 km²PeopleAragon0.99× · 1.3 million (2024)
- BrazilAreaFederal District1.04× · 5,790 km²PeopleTocantins88% · 1.5 million (2022)
- CanadaAreaPrince Edward Island1.05× · 5,730 km²PeopleManitoba1.00× · 1.3 million (2021)
- AustraliaAreanone within 2×PeopleSouth Australia71% · 1.9 million (2024)
- MexicoAreaColima1.02× · 5,880 km²PeopleAguascalientes1.02× · 1.3 million (2015)
- ThailandAreaPhayao1.00× · 5,990 km²PeopleSamut Prakan0.99× · 1.4 million (2020)
Where Yamaguchi sits in Japan
All 47 drawn on one equal-area map, so sizes are comparable. Select another to open it.
Ranked within Japan
Compare Yamaguchi
- Manitoba vs Yamaguchi
- Maine vs Yamaguchi
- Aragon vs Yamaguchi
- Yamaguchi vs Brunei
- Yamaguchi vs Cyprus
- Yamaguchi vs Prince Edward Island
- Shanghai vs Yamaguchi
- Yamaguchi vs Federal District
- Yamaguchi vs Delaware
- Sikkim vs Yamaguchi
- Yamaguchi vs Colima
- Yamaguchi vs Cantabria
- Corsica (France) vs Yamaguchi
- Yamaguchi vs Liguria
- Yamaguchi vs Phayao
- Yamaguchi vs Aguascalientes
- Yamaguchi vs Samut Prakan
Share this outline
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