Castilla–La Mancha is 1.01× the size of Hokkaido (Japan)

Castilla–La Mancha (autonomous community of Spain) covers about 79,400 km² (30,700 mi²) and Hokkaido (Japan) (prefecture of Japan) about 78,800 km² (30,400 mi²). Below, both outlines are drawn at one scale and centred on each other.

79,400km²Castilla–La Mancha
78,800km²Hokkaido (Japan)

100 km

Castilla–La Mancha
Hokkaido (Japan)

Hokkaido (Japan): Part of this region's boundary is disputed with Russia. Size Versus draws Natural Earth's de facto outline, the boundary as it is held on the ground, and takes no position on it.

What fits

Hokkaido (Japan) is 99% of the size of Castilla–La Mancha.
Castilla–La Mancha is larger by 626 km² (242 mi²), which is 0.8% of the area of Hokkaido (Japan).
Measured in Belgiums: Castilla–La Mancha is about 2.59, Hokkaido (Japan) about 2.57.

How they differ

Castilla–La Mancha is larger, but Hokkaido (Japan) has the larger population: 5.4 million against 2.1 million, 2.59× as many people.
Per square kilometre that is 69 in Hokkaido (Japan) against 26 in Castilla–La Mancha: Hokkaido (Japan) is 2.61× as densely populated.
Their centres are about 10,200 km apart.
On a standard web map Hokkaido (Japan) looks larger than Castilla–La Mancha: Castilla–La Mancha at 40°N is drawn about 1.7× too large and Hokkaido (Japan) at 43°N about 1.9×, so the map shows Hokkaido (Japan) as 1.12× the size of Castilla–La Mancha, when Castilla–La Mancha is 1.01× the size of Hokkaido (Japan).
Together Castilla–La Mancha and Hokkaido (Japan) cover 158,000 km², close to the size of Tunisia (157,000 km², 1.0% smaller).
At Hokkaido (Japan)'s density, Castilla–La Mancha would have 5.5 million people (it has 2.1 million). At Castilla–La Mancha's density, Hokkaido (Japan) would have 2.1 million (it has 5.4 million).
Hokkaido (Japan)'s centre is 3.8° of latitude, about 420 km, farther north than Castilla–La Mancha's.
Castilla–La Mancha is the 3rd largest of the 19 autonomous communities and cities of Spain and covers 16% of its area; it is the 17th most densely populated of them.
Hokkaido (Japan) is the largest of the 47 prefectures of Japan and covers 21% of its area; it is the 47th most densely populated of them.
Hokkaido (Japan) lies about 4° of latitude (roughly 422 km) north of Castilla–La Mancha.
Shared out evenly, each person in Castilla–La Mancha would have about 37,830 m² and each person in Hokkaido (Japan) about 14,500 m².
Laid side by side, Castilla–La Mancha and Hokkaido (Japan) would cover 158,000 km², about the same size as Tunisia.
Together they have 7.5 million people, about as many people as Sierra Leone.

Side by side

	Castilla–La Mancha	Hokkaido (Japan)
Is a	Autonomous communitySpain	PrefectureJapan
Area, measured	79,400 km²30,700 mi²	78,800 km²30,400 mi²
Official area	79,500 km²Wikidata	83,400 km²Wikidata
Rank by area	3rd of 19in Spain	1st of 47in Japan
Population	2.1 millionWikidata, 2024	5.4 millionWikidata, 2014
Rank by population	9th of 19in Spain	8th of 47in Japan
Density	26 per km²	69 per km²
Capital	Toledo	Sapporo
Latitude range	38°N to 41°N	41°N to 46°N

Population: Wikidata 2024 and Wikidata 2014. Official figures: Wikidata (CC0).

Wikidata's official figure of 79,500 km² agrees with our measured area of 79,400 km², to within 2%.
Our measured 78,800 km² is 5.6% below Wikidata's official figure of 83,400 km². Official figures can include inland water or count land that an outline draws differently. This difference is flagged for review.

Similar in size to Castilla–La Mancha

Similar in size to Hokkaido (Japan)

More comparisons

Sources and method

Outlines: Natural Earth, 1:10m Admin 1 - States, Provinces, public domain. The outline of Castilla–La Mancha is the provinces Natural Earth draws there, joined along their shared borders.
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