Jiangsu is 1.27× the size of Hokkaido (Japan)

Jiangsu (province of China) covers about 100,000 km² (38,600 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.

100,000km²Jiangsu
78,800km²Hokkaido (Japan)

100 km

Jiangsu
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 79% of the size of Jiangsu.
Jiangsu is larger by 21,300 km² (8,230 mi²), which is 27% of the area of Hokkaido (Japan).
Measured in Belgiums: Jiangsu is about 3.26, Hokkaido (Japan) about 2.57.

How they differ

Jiangsu also has the larger population: 84.7 million against 5.4 million, 15.6× as many people.
Per square kilometre that is 847 in Jiangsu against 69 in Hokkaido (Japan): Jiangsu is 12.3× as densely populated.
Their centres are about 2,320 km apart.
On a standard web map Hokkaido (Japan) looks larger than Jiangsu: Jiangsu at 33°N is drawn about 1.4× too large and Hokkaido (Japan) at 43°N about 1.9×, so the map shows Hokkaido (Japan) as 1.05× the size of Jiangsu, when Jiangsu is 1.27× the size of Hokkaido (Japan).
Together Jiangsu and Hokkaido (Japan) cover 179,000 km², close to the size of Uruguay (177,000 km², 0.9% smaller).
The gap between them, 21,300 km², is about the size of Djibouti (21,800 km²).
At Hokkaido (Japan)'s density, Jiangsu would have 6.9 million people (it has 84.7 million). At Jiangsu's density, Hokkaido (Japan) would have 66.7 million (it has 5.4 million).
Hokkaido (Japan)'s centre is 10.4° of latitude, about 1,160 km, farther north than Jiangsu's.
Jiangsu is the 25th largest of the 31 provinces and regions of China and covers 1.1% of its area; it is the 4th 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 10° of latitude (roughly 1,160 km) north of Jiangsu.
Shared out evenly, each person in Jiangsu would have about 1,180 m² and each person in Hokkaido (Japan) about 14,500 m².
Laid side by side, Jiangsu and Hokkaido (Japan) would cover 179,000 km², about the same size as Uruguay.
Together they have 90.2 million people, about as many people as Iran.

Side by side

	Jiangsu	Hokkaido (Japan)
Is a	ProvinceChina	PrefectureJapan
Area, measured	100,000 km²38,600 mi²	78,800 km²30,400 mi²
Official area	98,300 km²Wikidata	83,400 km²Wikidata
Rank by area	25th of 31in China	1st of 47in Japan
Population	84.7 millionWikidata, 2020	5.4 millionWikidata, 2014
Rank by population	4th of 31in China	8th of 47in Japan
Density	847 per km²	69 per km²
Capital	Nanjing	Sapporo
Latitude range	31°N to 35°N	41°N to 46°N

Population: Wikidata 2020 and Wikidata 2014. Official figures: Wikidata (CC0).

Wikidata's official figure of 98,300 km² agrees with our measured area of 100,000 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 Jiangsu

Similar in size to Hokkaido (Japan)

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