Niigata is 1.09× the size of Tianjin

Niigata (prefecture of Japan) covers about 12,500 km² (4,810 mi²) and Tianjin (municipality of China) about 11,500 km² (4,430 mi²). Below, both outlines are drawn at one scale and centred on each other.

12,500km²Niigata
11,500km²Tianjin

50 km

Niigata
Tianjin

What fits

Tianjin is 92% of the size of Niigata.
Niigata is larger by 978 km² (377 mi²), which is 8.5% of the area of Tianjin.
Measured in Belgiums: Niigata is about 0.41, Tianjin about 0.37.

How they differ

Niigata is larger, but Tianjin has the larger population: 13.9 million against 2.2 million, 6.32× as many people.
Per square kilometre that is 1,208 in Tianjin against 176 in Niigata: Tianjin is 6.86× as densely populated.
Their centres are about 1,890 km apart.
Together Niigata and Tianjin cover 23,900 km², close to the size of Rwanda (25,300 km², 5.8% bigger).
The gap between them, 978 km², is about the size of Åland (942 km²).
At Tianjin's density, Niigata would have 15.0 million people (it has 2.2 million). At Niigata's density, Tianjin would have 2.0 million (it has 13.9 million).
Tianjin's centre is 1.8° of latitude, about 200 km, farther north than Niigata's.
Niigata is the 5th largest of the 47 prefectures of Japan and covers 3.3% of its area; it is the 34th most densely populated of them.
Tianjin is the 30th largest of the 31 provinces and regions of China and covers 0.1% of its area; it is the 3rd most densely populated of them.
Both lie at about the same latitude, 38°N and 39°N.
Shared out evenly, each person in Niigata would have about 5,680 m² and each person in Tianjin about 830 m².
Laid side by side, Niigata and Tianjin would cover 23,900 km², 95% of the size of Rwanda.
Together they have 16.1 million people, 95% as many people as Senegal.

Side by side

	Niigata	Tianjin
Is a	PrefectureJapan	MunicipalityChina
Area, measured	12,500 km²4,810 mi²	11,500 km²4,430 mi²
Official area	12,600 km²Wikidata	11,900 km²Wikidata
Rank by area	5th of 47in Japan	30th of 31in China
Population	2.2 millionWikidata, 2021	13.9 millionWikidata, 2020
Rank by population	15th of 47in Japan	27th of 31in China
Density	176 per km²	1,208 per km²
Capital	Niigata	–
Latitude range	37°N to 39°N	39°N to 40°N

Population: Wikidata 2021 and Wikidata 2020. Official figures: Wikidata (CC0).

Wikidata's official figure of 12,600 km² agrees with our measured area of 12,500 km², to within 2%.
Our measured 11,500 km² is 3.7% below Wikidata's official figure of 11,900 km². Official figures can include inland water or count land that an outline draws differently.

Similar in size to Niigata

Similar in size to Tianjin

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