Réunion (France) is 1.08× the size of Kanagawa

Réunion (France) (overseas region of France) covers about 2,580 km² (997 mi²) and Kanagawa (prefecture of Japan) about 2,380 km² (921 mi²). Below, both outlines are drawn at one scale and centred on each other.

2,580km²Réunion (France)
2,380km²Kanagawa

20 km

Réunion (France)
Kanagawa

What fits

Kanagawa is 92% of the size of Réunion (France).
Réunion (France) is larger by 198 km² (76.5 mi²), which is 8.3% of the area of Kanagawa.
Measured in Belgiums: Réunion (France) is about 0.08, Kanagawa about 0.08.

How they differ

Réunion (France) is larger, but Kanagawa has the larger population: 9.2 million against 881,000, 10.5× as many people.
Per square kilometre that is 3,865 in Kanagawa against 341 in Réunion (France): Kanagawa is 11.3× as densely populated.
Their centres are about 10,800 km apart.
On a standard web map Kanagawa looks larger than Réunion (France): Réunion (France) at 21°S is drawn about 1.1× too large and Kanagawa at 35°N about 1.5×, so the map shows Kanagawa as 1.21× the size of Réunion (France), when Réunion (France) is 1.08× the size of Kanagawa.
Together Réunion (France) and Kanagawa cover 4,970 km², close to the size of Trinidad and Tobago (5,120 km², 3.1% bigger).
The gap between them, 198 km², is about the size of Aruba (170 km²).
At Kanagawa's density, Réunion (France) would have 10.0 million people (it has 881,000). At Réunion (France)'s density, Kanagawa would have 814,000 (it has 9.2 million).
Kanagawa's centre is 56.5° of latitude, about 6,290 km, farther north than Réunion (France)'s.
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.
Kanagawa is the 43rd largest of the 47 prefectures of Japan and covers 0.6% of its area; it is the 3rd most densely populated of them.
Kanagawa lies about 57° of latitude (roughly 6,290 km) north of Réunion (France), on the other side of the equator.
Shared out evenly, each person in Réunion (France) would have about 2,930 m² and each person in Kanagawa about 260 m².
Laid side by side, Réunion (France) and Kanagawa would cover 4,970 km², 97% of the size of Trinidad and Tobago.
Together they have 10.1 million people, about as many people as Azerbaijan.
Kanagawa is drawn from 83 points: at a size under 2,500 km² the outline is a sketch, so the overlap shows the proportions rather than the exact shape.

Side by side

	Réunion (France)	Kanagawa
Is a	Overseas regionFrance	PrefectureJapan
Area, measured	2,580 km²997 mi²	2,380 km²921 mi²
Official area	2,510 km²Wikidata	2,420 km²Wikidata
Rank by area	15th of 18in France	43rd of 47in Japan
Population	881,000Wikidata, 2022	9.2 millionWikidata, 2020
Rank by population	13th of 18in France	2nd of 47in Japan
Density	341 per km²	3,865 per km²
Capital	Saint-Denis	Yokohama
Latitude range	21°S to 21°S	35°N to 36°N

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

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.
Wikidata's official figure of 2,420 km² agrees with our measured area of 2,380 km², to within 2%.

Similar in size to Réunion (France)

Similar in size to Kanagawa

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