Kochi is 43.7× the size of Washington, D.C.
Kochi (prefecture of Japan) covers about 7,090 km² (2,740 mi²) and Washington, D.C. (federal district of the United States) about 162 km² (62.6 mi²). Below, both outlines are drawn at one scale and centred on each other.
- 7,090km²Kochi
- 162km²Washington, D.C.
50 km
- Kochi
- Washington, D.C.
What fits
- Washington, D.C. fits inside Kochi about 43.7 times by area.
- Kochi is larger by 6,930 km² (2,670 mi²), which is 4,270% of the area of Washington, D.C.
- Measured in Belgiums: Kochi is about 0.23, Washington, D.C. about 0.01.
How they differ
- Kochi is larger, but Washington, D.C. has the larger population: 690,000 against 689,000, 1.00× as many people.
- Per square kilometre that is 4,251 in Washington, D.C. against 97 in Kochi: Washington, D.C. is 43.7× as densely populated.
- Their centres are about 11,400 km apart.
- A standard web map misstates the comparison: Kochi at 33°N is drawn about 1.4× too large and Washington, D.C. at 39°N about 1.7×, so the map shows Kochi as 38.0× the size of Washington, D.C. instead of 43.7×.
- Together Kochi and Washington, D.C. cover 7,250 km², close to the size of Palestine (6,070 km², 16% smaller).
- The gap between them, 6,930 km², is about the size of Palestine (6,070 km²).
- At Washington, D.C.'s density, Kochi would have 30.1 million people (it has 689,000). At Kochi's density, Washington, D.C. would have 16,000 (it has 690,000).
- Washington, D.C.'s centre is 5.5° of latitude, about 610 km, farther north than Kochi's.
- Kochi is the 17th largest of the 47 prefectures of Japan and covers 1.9% of its area; it is the 43rd most densely populated of them.
- Washington, D.C. is the 51st largest of the 51 states and districts of the United States and covers less than 0.1% of its area; it is the most densely populated of them.
- Washington, D.C. lies about 6° of latitude (roughly 612 km) north of Kochi.
- Shared out evenly, each person in Kochi would have about 10,290 m² and each person in Washington, D.C. about 240 m².
- Laid side by side, Kochi and Washington, D.C. would cover 7,250 km², 1.27× the size of Brunei.
- Together they have 1.4 million people, about as many people as Estonia.
- Washington, D.C. is drawn from 10 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
| Kochi | Washington, D.C. | |
|---|---|---|
| Is a | PrefectureJapan | Federal DistrictUnited States |
| Area, measured | 7,090 km²2,740 mi² | 162 km²62.6 mi² |
| Official area | 7,100 km²Wikidata | 177 km²Wikidata |
| Rank by area | 17th of 47in Japan | 51st of 51in the United States |
| Population | 689,000Wikidata, 2021 | 690,000Wikidata, 2020 |
| Rank by population | 45th of 47in Japan | 49th of 51in the United States |
| Density | 97 per km² | 4,251 per km² |
| Capital | Kōchi-shi | – |
| Latitude range | 33°N to 34°N | 39°N to 39°N |
Population: Wikidata 2021 and Wikidata 2020. Official figures: Wikidata (CC0).
- Wikidata's official figure of 7,100 km² agrees with our measured area of 7,090 km², to within 2%.
- Our measured 162 km² is 8.4% below Wikidata's official figure of 177 km². Official figures can include inland water or count land that an outline draws differently. This difference is flagged for review.
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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
