Île-de-France is 1.03× the size of Nan

Île-de-France (region of France) covers about 12,100 km² (4,670 mi²) and Nan (province of Thailand) about 11,700 km² (4,530 mi²). Below, both outlines are drawn at one scale and centred on each other.

12,100km²Île-de-France
11,700km²Nan

50 km

Île-de-France
Nan

What fits

Nan is 97% of the size of Île-de-France.
Île-de-France is larger by 384 km² (148 mi²), which is 3.3% of the area of Nan.
Measured in Belgiums: Île-de-France is about 0.39, Nan about 0.38.

How they differ

Île-de-France also has the larger population: 12.4 million against 477,000, 26.0× as many people.
Per square kilometre that is 1,023 in Île-de-France against 41 in Nan: Île-de-France is 25.1× as densely populated.
Their centres are about 9,030 km apart.
A standard web map misstates the comparison: Île-de-France at 49°N is drawn about 2.3× too large and Nan at 19°N about 1.1×, so the map shows Île-de-France as 2.12× the size of Nan instead of 1.03×.
Together Île-de-France and Nan cover 23,800 km², close to the size of Rwanda (25,300 km², 6.2% bigger).
The gap between them, 384 km², is about the size of Saint Vincent and the Grenadines (368 km²).
At Nan's density, Île-de-France would have 492,000 people (it has 12.4 million). At Île-de-France's density, Nan would have 12.0 million (it has 477,000).
Île-de-France's centre is 29.9° of latitude, about 3,320 km, farther north than Nan's.
Île-de-France is the 13th largest of the 18 regions of France and covers 1.9% of its area; it is the most densely populated of them.
Nan is the 11th largest of the 77 provinces of Thailand and covers 2.3% of its area; it is the 76th most densely populated of them.
Île-de-France lies about 30° of latitude (roughly 3,320 km) north of Nan.
Shared out evenly, each person in Île-de-France would have about 980 m² and each person in Nan about 24,590 m².
Laid side by side, Île-de-France and Nan would cover 23,800 km², 94% of the size of Rwanda.
Together they have 12.9 million people, about as many people as South Sudan.

Side by side

	Île-de-France	Nan
Is a	RegionFrance	ProvinceThailand
Area, measured	12,100 km²4,670 mi²	11,700 km²4,530 mi²
Official area	12,000 km²Wikidata	11,500 km²Wikidata
Rank by area	13th of 18in France	11th of 77in Thailand
Population	12.4 millionWikidata, 2022	477,000Wikidata, 2020
Rank by population	1st of 18in France	58th of 77in Thailand
Density	1,023 per km²	41 per km²
Capital	Paris	Nan
Latitude range	48°N to 49°N	18°N to 20°N

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

Wikidata's official figure of 12,000 km² agrees with our measured area of 12,100 km², to within 2%.
Our measured 11,700 km² is 2.2% above Wikidata's official figure of 11,500 km². Official figures can include inland water or count land that an outline draws differently.

Similar in size to Île-de-France

Similar in size to Nan

More comparisons

Sources and method

Outlines: Natural Earth, 1:10m Admin 1 - States, Provinces, public domain. The outline of Île-de-France is the departments Natural Earth draws there, joined along their shared borders.
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