| Montfort-l'Amaury | ||
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Town hall
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| Coordinates: 48°46′40″N 1°48′36″E / 48.7778°N 1.81°ECoordinates: 48°46′40″N 1°48′36″E / 48.7778°N 1.81°E | ||
| Country | France | |
| Region | Île-de-France | |
| Department | Yvelines | |
| Arrondissement | Rambouillet | |
| Canton | Montfort-l'Amaury | |
| Government | ||
| • Mayor (2008–14) | Hervé Planchenault | |
| Area1 | 5.71 km2 (2.20 sq mi) | |
| Population (2006)2 | 33,135 | |
| • Density | 5,800/km2 (15,000/sq mi) | |
| Time zone | CET (UTC+1) | |
| • Summer (DST) | CEST (UTC+2) | |
| INSEE/Postal code | 78420 /78490 | |
| Elevation | 98–183 m (322–600 ft) | |
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1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km² (0.386 sq mi or 247 acres) and river estuaries. 2Population without double counting: residents of multiple communes (e.g., students and military personnel) only counted once. |
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1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km² (0.386 sq mi or 247 acres) and river estuaries.
Montfort-l'Amaury is a commune in the Yvelines department in the Île-de-France region in north-central France. It is located in the south-western suburbs of Paris 20 km (12 mi) north of Rambouillet. The name comes from Amaury I de Montfort, the first count of Montfort.
Montfort-l'Amaury lies north of the Rambouillet Forest. It is located at the foot of low hills, at about 130 m above sea level.
King Robert II built a castle in 996 in the hills of Montfort. Montfort-l'Amaury was the stronghold of the Montfort family from the start of the 11th century. Amaury I built the ramparts.
The Comté de Montfort was related to the Duchy of Brittany following the marriage of Yolande de Dreux-Montfort with Arthur of Brittany in 1294. It returned to the crown of France when Brittany became a part of France under Francis I. The castle was destroyed by the English during the Hundred Years' War.