Ishikawa is 1.59× the size of Réunion (France)

Ishikawa (prefecture of Japan) covers about 4,110 km² (1,590 mi²) and Réunion (France) (overseas region of France) about 2,580 km² (997 mi²). Below, both outlines are drawn at one scale and centred on each other.

4,110km²Ishikawa
2,580km²Réunion (France)

20 km

Ishikawa
Réunion (France)

What fits

Réunion (France) is 63% of the size of Ishikawa.
Ishikawa is larger by 1,530 km² (591 mi²), which is 59% of the area of Réunion (France).
Measured in Belgiums: Ishikawa is about 0.13, Réunion (France) about 0.08.

How they differ

Ishikawa also has the larger population: 1.1 million against 881,000, 1.28× as many people.
Per square kilometre that is 341 in Réunion (France) against 275 in Ishikawa: Réunion (France) is 1.24× as densely populated.
Their centres are about 10,700 km apart.
A standard web map misstates the comparison: Ishikawa at 37°N is drawn about 1.6× too large and Réunion (France) at 21°S about 1.1×, so the map shows Ishikawa as 2.16× the size of Réunion (France) instead of 1.59×.
Together Ishikawa and Réunion (France) cover 6,700 km², close to the size of Palestine (6,070 km², 9.3% smaller).
The gap between them, 1,530 km², is about the size of Comoros (1,670 km²).
At Réunion (France)'s density, Ishikawa would have 1.4 million people (it has 1.1 million). At Ishikawa's density, Réunion (France) would have 711,000 (it has 881,000).
Ishikawa's centre is 57.9° of latitude, about 6,440 km, farther north than Réunion (France)'s.
Ishikawa is the 36th largest of the 47 prefectures of Japan and covers 1.1% of its area; it is the 23rd most densely populated of them.
Réunion (France) is the 15th largest of the 18 regions of France and covers 0.4% of its area; it is the 3rd most densely populated of them.
Ishikawa lies about 58° of latitude (roughly 6,440 km) north of Réunion (France), on the other side of the equator.
Shared out evenly, each person in Ishikawa would have about 3,630 m² and each person in Réunion (France) about 2,930 m².
Laid side by side, Ishikawa and Réunion (France) would cover 6,700 km², 1.17× the size of Brunei.
Together they have 2.0 million people, about as many people as Lesotho.

Side by side

	Ishikawa	Réunion (France)
Is a	PrefectureJapan	Overseas regionFrance
Area, measured	4,110 km²1,590 mi²	2,580 km²997 mi²
Official area	4,190 km²Wikidata	2,510 km²Wikidata
Rank by area	36th of 47in Japan	15th of 18in France
Population	1.1 millionWikidata, 2020	881,000Wikidata, 2022
Rank by population	33rd of 47in Japan	13th of 18in France
Density	275 per km²	341 per km²
Capital	Kanazawa	Saint-Denis
Latitude range	36°N to 38°N	21°S to 21°S

Population: Wikidata 2020 and Wikidata 2022. Official figures: Wikidata (CC0).

Wikidata's official figure of 4,190 km² agrees with our measured area of 4,110 km², to within 2%.
Our measured 2,580 km² is 2.8% above Wikidata's official figure of 2,510 km². Official figures can include inland water or count land that an outline draws differently.

Similar in size to Ishikawa

Similar in size to Réunion (France)

More comparisons

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

Full method