Hiroshima is 1.43× the size of Federal District

Hiroshima (prefecture of Japan) covers about 8,300 km² (3,210 mi²) and Federal District (federal district of Brazil) about 5,790 km² (2,240 mi²). Below, both outlines are drawn at one scale and centred on each other.

8,300km²Hiroshima
5,790km²Federal District

20 km

Hiroshima
Federal District

What fits

Federal District is 70% of the size of Hiroshima.
Hiroshima is larger by 2,510 km² (969 mi²), which is 43% of the area of Federal District.
Measured in Belgiums: Hiroshima is about 0.27, Federal District about 0.19.

How they differ

Hiroshima is larger, but Federal District has the larger population: 2.8 million against 2.8 million, 1.01× as many people.
Per square kilometre that is 486 in Federal District against 336 in Hiroshima: Federal District is 1.45× as densely populated.
Their centres are about 17,900 km apart.
A standard web map misstates the comparison: Hiroshima at 35°N is drawn about 1.5× too large and Federal District at 16°S about 1.1×, so the map shows Hiroshima as 1.96× the size of Federal District instead of 1.43×.
Together Hiroshima and Federal District cover 14,100 km², close to the size of Montenegro (13,700 km², 2.6% smaller).
The gap between them, 2,510 km², is about the size of Luxembourg (2,610 km²).
At Federal District's density, Hiroshima would have 4.0 million people (it has 2.8 million). At Hiroshima's density, Federal District would have 1.9 million (it has 2.8 million).
Hiroshima's centre is 50.4° of latitude, about 5,600 km, farther north than Federal District's.
Hiroshima is the 12th largest of the 47 prefectures of Japan and covers 2.2% of its area; it is the 16th most densely populated of them.
Federal District is the 27th largest of the 27 states and districts of Brazil and covers less than 0.1% of its area; it is the most densely populated of them.
Hiroshima lies about 50° of latitude (roughly 5,600 km) north of Federal District, on the other side of the equator.
Shared out evenly, each person in Hiroshima would have about 2,970 m² and each person in Federal District about 2,060 m².
Laid side by side, Hiroshima and Federal District would cover 14,100 km², about the same size as Montenegro.
Together they have 5.6 million people, about as many people as Norway.

Side by side

	Hiroshima	Federal District
Is a	PrefectureJapan	Federal DistrictBrazil
Area, measured	8,300 km²3,210 mi²	5,790 km²2,240 mi²
Official area	8,480 km²Wikidata	5,760 km²Wikidata
Rank by area	12th of 47in Japan	27th of 27in Brazil
Population	2.8 millionWikidata, 2021	2.8 millionWikidata, 2022
Rank by population	12th of 47in Japan	20th of 27in Brazil
Density	336 per km²	486 per km²
Capital	Hiroshima	Brasília
Latitude range	34°N to 35°N	16°S to 15°S

Population: Wikidata 2021 and Wikidata 2022. Official figures: Wikidata (CC0).

Our measured 8,300 km² is 2.1% below Wikidata's official figure of 8,480 km². Official figures can include inland water or count land that an outline draws differently.
Wikidata's official figure of 5,760 km² agrees with our measured area of 5,790 km², to within 2%.

Similar in size to Hiroshima

Similar in size to Federal District

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