Prefecture of Japan
Ibaraki
茨城県Ibaraki is a prefecture of Japan. It covers about 6,340 km² (2,450 mi²), the 23rd largest of the 47 prefectures in Natural Earth’s file for Japan, and 1.11× the size of Brunei. About 2.9 million people live there (Wikidata, 2021).
50 km
- Ibaraki
- Brunei
Facts
| Area, measured | 6,340 km²2,450 mi² |
|---|---|
| Official area | 6,100 km²Wikidata · 3.9% below our measure |
| Share of Japan | 1.7%of the area of the 47 prefectures |
| Rank by area | 23rd of 47prefectures of Japan |
| Population | 2.9 millionWikidata, 2021 |
| Density | 452 people per km² |
| Capital | Mito |
| Latitude range | 36°N to 37°N |
| Type | PrefectureJP-08 |
What the numbers say about Ibaraki
- Ibaraki covers 1.7% of the area of Japan and ranks 11th of 47 by population, against 23rd by area.
- It would take 59.0 prefectures the size of Ibaraki to cover Japan.
- The largest, Hokkaido (Japan), is 12.4× the size of Ibaraki; the smallest, Kagawa, is 29% of it.
- Closest in size within Japan: Gunma (6,340 km², 1.00×) and Tochigi (6,480 km², 1.02×).
- Counted as a country, Ibaraki 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 2.9 million people it would rank 138th of 238 by population.
- Ibaraki has 452 people per km², about the density of the Netherlands, which has 480 per km².
- That makes Ibaraki the 13th most densely populated of the 47 prefectures, 1.34× 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 Ibaraki looks bigger there than it is.
- Laid out flat, Ibaraki stretches about 133 km north to south and 108 km east to west.
- Our measured 6,340 km² is 3.9% above Wikidata's official figure of 6,100 km². Official figures can include inland water or count land that an outline draws differently.
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 km²PeopleTibet78% · 3.6 million (2020)
- United StatesAreaDelaware1.23× · 5,170 km²PeopleKansas0.97× · 2.9 million (2020)
- IndiaAreaSikkim0.91× · 6,940 km²PeopleManipur1.00× · 2.9 million (2011)
- GermanyAreanone within 2×PeopleSchleswig-Holstein0.97× · 3.0 million (2022)
- FranceAreaCorsica (France)73% · 8,670 km²PeopleBourgogne-Franche-Comté1.02× · 2.8 million (2022)
- ItalyAreaLiguria1.15× · 5,490 km²PeopleTuscany77% · 3.7 million (2019)
- SpainAreaBasque Country90% · 7,060 km²PeopleGalicia1.06× · 2.7 million (2024)
- BrazilAreaFederal District1.09× · 5,790 km²PeopleFederal District1.02× · 2.8 million (2022)
- CanadaAreaPrince Edward Island1.11× · 5,730 km²PeopleAlberta67% · 4.3 million (2021)
- AustraliaAreanone within 2×PeopleWestern Australia0.95× · 3.0 million (2024)
- MexicoAreaColima1.08× · 5,880 km²PeopleHidalgo1.00× · 2.9 million (2015)
- ThailandAreaLopburi0.98× · 6,480 km²PeopleNakhon Ratchasima1.09× · 2.6 million (2020)
Where Ibaraki sits in Japan
All 47 drawn on one equal-area map, so sizes are comparable. Select another to open it.
Ranked within Japan
Compare Ibaraki
- Sonora vs Ibaraki
- Manipur vs Ibaraki
- Hidalgo vs Ibaraki
- Ibaraki vs Brunei
- Ibaraki vs Cyprus
- Lithuania vs Ibaraki
- Uruguay vs Ibaraki
- Ibaraki vs Prince Edward Island
- Shanghai vs Ibaraki
- Ibaraki vs Federal District
- Ibaraki vs Delaware
- Sikkim vs Ibaraki
- Ibaraki vs Colima
- Basque Country vs Ibaraki
- Corsica (France) vs Ibaraki
- Ibaraki vs Liguria
- Lopburi vs Ibaraki
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