Berthier-sur-Mer
| Berthier-sur-Mer | |
|---|---|
| Aerial view of Berthier-sur-Mer | |
| Motto(s): Sur terre et sur mer, Berthier toujours plus fier | |
| Location within Montmagny RCM | |
| Coordinates: 46°55′N 70°44′W / 46.917°N 70.733°W | |
| Country | Canada | 
| Province | Quebec | 
| Region | Chaudière-Appalaches | 
| RCM | Montmagny | 
| Constituted | July 1, 1855 | 
| Government | |
| • Mayor | Richard Gallibois | 
| • Fed. riding | Montmagny—L'Islet— Kamouraska—Rivière- du-Loup | 
| • Prov. riding | Côte-du-Sud | 
| Area | |
|  • Total | 26.85 km2 (10.37 sq mi) | 
| • Land | 26.85 km2 (10.37 sq mi) | 
| Population  (2021) | |
|  • Total | 1,744 | 
| • Density | 65.0/km2 (168/sq mi) | 
| • Pop 2016-2021 | 12.2% | 
| • Dwellings | 939 | 
| Time zone | UTC−5 (EST) | 
| • Summer (DST) | UTC−4 (EDT) | 
| Postal code(s) | |
| Area codes | 418 and 581 | 
| Highways A-20 (TCH) | R-132 | 
| Website | berthiersurmer | 
Berthier-sur-Mer (French pronunciation: [bɛʁtje syʁ mɛʁ], lit. 'Berthier on Sea') is a town in the Montmagny Regional County Municipality within the Chaudière-Appalaches region of Quebec, Canada. It is located on the south shore of the St. Lawrence River, east of Quebec City on Route 132.