Udon Thani is 1.88× the size of Federal District

Udon Thani (province of Thailand) covers about 10,900 km² (4,200 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.

10,900km²Udon Thani
5,790km²Federal District

50 km

Udon Thani
Federal District

What fits

Federal District is 53% of the size of Udon Thani.
Udon Thani is larger by 5,080 km² (1,960 mi²), which is 88% of the area of Federal District.
Measured in Belgiums: Udon Thani is about 0.35, Federal District about 0.19.

How they differ

Udon Thani is larger, but Federal District has the larger population: 2.8 million against 1.6 million, 1.80× as many people.
Per square kilometre that is 486 in Federal District against 144 in Udon Thani: Federal District is 3.37× as densely populated.
Their centres are about 16,900 km apart.
Together Udon Thani and Federal District cover 16,700 km², close to the size of Eswatini (17,100 km², 2.7% bigger).
The gap between them, 5,080 km², is about the size of Trinidad and Tobago (5,120 km²).
At Federal District's density, Udon Thani would have 5.3 million people (it has 1.6 million). At Udon Thani's density, Federal District would have 836,000 (it has 2.8 million).
Udon Thani's centre is 33.2° of latitude, about 3,690 km, farther north than Federal District's.
Udon Thani is the 13th largest of the 77 provinces of Thailand and covers 2.1% of its area; it is the 29th 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.
Udon Thani lies about 33° of latitude (roughly 3,690 km) north of Federal District, on the other side of the equator.
Shared out evenly, each person in Udon Thani would have about 6,930 m² and each person in Federal District about 2,060 m².
Laid side by side, Udon Thani and Federal District would cover 16,700 km², about the same size as Eswatini.
Together they have 4.4 million people, about as many people as Kuwait.

Side by side

	Udon Thani	Federal District
Is a	ProvinceThailand	Federal DistrictBrazil
Area, measured	10,900 km²4,200 mi²	5,790 km²2,240 mi²
Official area	11,700 km²Wikidata	5,760 km²Wikidata
Rank by area	13th of 77in Thailand	27th of 27in Brazil
Population	1.6 millionWikidata, 2020	2.8 millionWikidata, 2022
Rank by population	7th of 77in Thailand	20th of 27in Brazil
Density	144 per km²	486 per km²
Capital	Udon Thani	Brasília
Latitude range	17°N to 18°N	16°S to 15°S

Population: Wikidata 2020 and Wikidata 2022. Official figures: Wikidata (CC0).

Our measured 10,900 km² is 7.3% below Wikidata's official figure of 11,700 km². Official figures can include inland water or count land that an outline draws differently. This difference is flagged for review.
Wikidata's official figure of 5,760 km² agrees with our measured area of 5,790 km², to within 2%.

Similar in size to Udon Thani

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