Rosny-sur-Seine | |
|---|---|
 Town hall | |
 Coat of arms | |
Location of Rosny-sur-Seine  | |
  Rosny-sur-Seine  Rosny-sur-Seine | |
| Coordinates: 49°00′02″N 1°37′57″E / 49.0006°N 1.6325°E | |
| Country | France |
| Region | Île-de-France |
| Department | Yvelines |
| Arrondissement | Mantes-la-Jolie |
| Canton | Mantes-la-Jolie |
| Intercommunality | CU Grand Paris Seine et Oise |
| Government | |
| • Mayor (2020–2026) | Pierre-Yves Dumoulin[1] |
| Area 1 | 19.36 km2 (7.47 sq mi) |
| Population (2021)[2] | 6,929 |
| • Density | 360/km2 (930/sq mi) |
| Time zone | UTC+01:00 (CET) |
| • Summer (DST) | UTC+02:00 (CEST) |
| INSEE/Postal code | 78531 /78710 |
| Elevation | 17–144 m (56–472 ft) (avg. 30 m or 98 ft) |
| 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries. | |
Rosny-sur-Seine (French pronunciation: [ʁoni syʁ sɛn], literally Rosny on Seine) is a commune in the Yvelines department in the Île-de-France in north-central France.
