Gaillon-sur-Montcient | |
|---|---|
 The town hall in Gaillon-sur-Montcient | |
Location of Gaillon-sur-Montcient  | |
  Gaillon-sur-Montcient  Gaillon-sur-Montcient | |
| Coordinates: 49°01′35″N 1°53′38″E / 49.0264°N 1.8939°E | |
| Country | France |
| Region | Île-de-France |
| Department | Yvelines |
| Arrondissement | Mantes-la-Jolie |
| Canton | Les Mureaux |
| Intercommunality | CU Grand Paris Seine et Oise |
| Government | |
| • Mayor (2022–2026) | Marie-Christine Dubernard[1][2] |
| Area 1 | 4.83 km2 (1.86 sq mi) |
| Population (2021)[3] | 677 |
| • Density | 140/km2 (360/sq mi) |
| Time zone | UTC+01:00 (CET) |
| • Summer (DST) | UTC+02:00 (CEST) |
| INSEE/Postal code | 78261 /78250 |
| Elevation | 22–126 m (72–413 ft) (avg. 91 m or 299 ft) |
| 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries. | |
Gaillon-sur-Montcient (French pronunciation: [ɡajɔ̃ syʁ mɔ̃sjɑ̃]) is a commune in the Yvelines department in the Île-de-France region in north-central France.
