Prefecture of Japan
Aichi
愛知県Aichi is a prefecture of Japan. It covers about 4,940 km² (1,910 mi²), the 29th largest of the 47 prefectures in Natural Earth’s file for Japan, and 96% of the size of Trinidad and Tobago. About 7.5 million people live there (Wikidata, 2021).
50 km
- Trinidad and Tobago
- Aichi
Facts
| Area, measured | 4,940 km²1,910 mi² |
|---|---|
| Official area | 5,170 km²Wikidata · 4.4% above our measure |
| Share of Japan | 1.3%of the area of the 47 prefectures |
| Rank by area | 29th of 47prefectures of Japan |
| Population | 7.5 millionWikidata, 2021 |
| Density | 1,523 people per km² |
| Capital | Nagoya |
| Latitude range | 35°N to 35°N |
| Type | PrefectureJP-23 |
What the numbers say about Aichi
- Aichi covers 1.3% of the area of Japan and ranks 4th of 47 by population, against 29th by area.
- It would take 75.6 prefectures the size of Aichi to cover Japan.
- The largest, Hokkaido (Japan), is 15.9× the size of Aichi; the smallest, Kagawa, is 38% of it.
- Closest in size within Japan: Fukuoka (5,050 km², 1.02×) and Chiba (5,110 km², 1.03×).
- Counted as a country, Aichi would be larger than 65 of the 239 countries and territories listed on sizeversus, and would rank 175th by area, between Trinidad and Tobago (5,120 km²) and Cape Verde (3,930 km²).
- With 7.5 million people it would rank 103rd of 238 by population.
- Aichi has 1,523 people per km², about the density of Bangladesh, which has 1,252 per km².
- That makes Aichi the 5th most densely populated of the 47 prefectures, 4.51× the average for Japan (338 per km²).
- On a standard web map (Web Mercator), a place at 35°N is drawn about 1.5× too large in area, so Aichi looks bigger there than it is.
- Laid out flat, Aichi stretches about 90 km north to south and 103 km east to west.
- Our measured 4,940 km² is 4.4% below Wikidata's official figure of 5,170 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.
- ChinaAreaShanghai73% · 6,750 km²PeopleNingxia1.04× · 7.2 million (2020)
- United StatesAreaDelaware0.96× · 5,170 km²PeopleWashington State0.98× · 7.7 million (2020)
- IndiaAreaSikkim71% · 6,940 km²PeopleHimachal Pradesh1.10× · 6.9 million (2011)
- GermanyAreaSaarland1.86× · 2,650 km²PeopleLower Saxony0.95× · 7.9 million (2022)
- FranceAreaCorsica (France)57% · 8,670 km²PeopleAuvergne-Rhône-Alpes0.92× · 8.2 million (2022)
- ItalyAreaMolise1.09× · 4,530 km²PeopleLazio1.28× · 5.9 million (2019)
- SpainAreaBalearic Islands0.97× · 5,120 km²PeopleCatalonia0.94× · 8.0 million (2024)
- BrazilAreaFederal District85% · 5,790 km²PeopleSanta Catarina0.99× · 7.6 million (2022)
- CanadaAreaPrince Edward Island86% · 5,730 km²PeopleQuebec88% · 8.5 million (2021)
- AustraliaAreanone within 2×PeopleVictoria1.07× · 7.0 million (2024)
- MexicoAreaMorelos0.97× · 5,080 km²PeopleJalisco0.96× · 7.8 million (2015)
- ThailandAreaYala1.05× · 4,700 km²PeopleBangkok1.32× · 5.7 million (2018)
Where Aichi sits in Japan
All 47 drawn on one equal-area map, so sizes are comparable. Select another to open it.
Compare Aichi
- Santa Catarina vs Aichi
- Trinidad and Tobago vs Aichi
- Cyprus vs Aichi
- Sierra Leone vs Aichi
- Austria vs Aichi
- Switzerland vs Aichi
- Aichi vs Luxembourg
- Prince Edward Island vs Aichi
- Shanghai vs Aichi
- Federal District vs Aichi
- Delaware vs Aichi
- Sikkim vs Aichi
- Morelos vs Aichi
- Balearic Islands vs Aichi
- Corsica (France) vs Aichi
- Aichi vs Saarland
- Aichi vs Molise
- Aichi vs Yala
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