Idaho is 15.5× the size of Fukushima
Idaho (state of the United States) covers about 216,000 km² (83,500 mi²) and Fukushima (prefecture of Japan) about 14,000 km² (5,400 mi²). Below, both outlines are drawn at one scale and centred on each other.
- 216,000km²Idaho
- 14,000km²Fukushima
100 km
- Idaho
- Fukushima
What fits
- Fukushima fits inside Idaho about 15.5 times by area.
- Idaho is larger by 202,000 km² (78,100 mi²), which is 1,446% of the area of Fukushima.
- Measured in Belgiums: Idaho is about 7.05, Fukushima about 0.46.
How they differ
- Idaho also has the larger population: 1.8 million against 1.8 million, 1.01× as many people.
- Per square kilometre that is 131 in Fukushima against 8.5 in Idaho: Fukushima is 15.3× as densely populated.
- Their centres are about 8,230 km apart.
- A standard web map misstates the comparison: Idaho at 44°N is drawn about 2.0× too large and Fukushima at 37°N about 1.6×, so the map shows Idaho as 19.1× the size of Fukushima instead of 15.5×.
- Together Idaho and Fukushima cover 230,000 km², close to the size of Laos (228,000 km², 0.9% smaller).
- The gap between them, 202,000 km², is about the size of Kyrgyzstan (199,000 km²).
- At Fukushima's density, Idaho would have 28.2 million people (it has 1.8 million). At Idaho's density, Fukushima would have 119,000 (it has 1.8 million).
- Idaho's centre is 7.0° of latitude, about 780 km, farther north than Fukushima's.
- Idaho is the 14th largest of the 51 states and districts of the United States and covers 2.3% of its area; it is the 45th most densely populated of them.
- Fukushima is the 3rd largest of the 47 prefectures of Japan and covers 3.7% of its area; it is the 40th most densely populated of them.
- Idaho lies about 7° of latitude (roughly 777 km) north of Fukushima.
- Shared out evenly, each person in Idaho would have about 117,590 m² and each person in Fukushima about 7,660 m².
- Laid side by side, Idaho and Fukushima would cover 230,000 km², about the same size as Laos.
- Together they have 3.7 million people, 96% as many people as Bosnia and Herzegovina.
Side by side
| Idaho | Fukushima | |
|---|---|---|
| Is a | StateUnited States | PrefectureJapan |
| Area, measured | 216,000 km²83,500 mi² | 14,000 km²5,400 mi² |
| Official area | 217,000 km²Wikidata | 13,800 km²Wikidata |
| Rank by area | 14th of 51in the United States | 3rd of 47in Japan |
| Population | 1.8 millionWikidata, 2020 | 1.8 millionWikidata, 2021 |
| Rank by population | 38th of 51in the United States | 21st of 47in Japan |
| Density | 8.5 per km² | 131 per km² |
| Capital | Boise | Fukushima |
| Latitude range | 42°N to 49°N | 37°N to 38°N |
Population: Wikidata 2020 and Wikidata 2021. Official figures: Wikidata (CC0).
- Wikidata's official figure of 217,000 km² agrees with our measured area of 216,000 km², to within 2%.
- Wikidata's official figure of 13,800 km² agrees with our measured area of 14,000 km², to within 2%.
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Similar in size to Fukushima
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Sources and method
- Outlines
- Natural Earth, 1:10m Admin 1 - States, Provinces, public domain
- Boundary
- De facto, as drawn by Natural Earth. A region is drawn whole, every island included; a country is its main territory.
- Area
- Measured on the WGS84 ellipsoid from the full-detail outlines, shown rounded.
- Drawing
- Each outline is projected with an equal-area projection centred on its own centroid, so areas stay true and the two can be laid over each other.
- Data built
- 2026-11-12