List of municipalities in Quebec List of municipalities in Quebec Region 12

| Code | Type_ | Name_ | Area_km_2_ | Population | Regional_County_Municipality | Region |
|---|---|---|---|---|---|---|
| 18005 | M | Saint-Just-de-Bretenières | 132.35 | 808 | Montmagny | 12 |
| 18010 | M | Lac-Frontière | 51.33 | 168 | Montmagny | 12 |
| 18015 | P | Saint-Fabien-de-Panet | 185.31 | 1024 | Montmagny | 12 |
| 18020 | M | Sainte-Lucie-de-Beauregard | 80.18 | 306 | Montmagny | 12 |
| 18025 | P | Sainte-Apolline-de-Patton | 255.70 | 638 | Montmagny | 12 |
| 18030 | M | Saint-Paul-de-Montminy | 162.80 | 866 | Montmagny | 12 |
| 18035 | M | Sainte-Euphémie-sur-Rivière-du-Sud | 93.21 | 340 | Montmagny | 12 |
| 18040 | M | Notre-Dame-du-Rosaire | 158.53 | 391 | Montmagny | 12 |
| 18045 | M | Cap-Saint-Ignace | 227.76 | 3225 | Montmagny | 12 |
| 18050 | V | Montmagny | 125.76 | 11667 | Montmagny | 12 |
| 18055 | P | Saint-Pierre-de-la-Rivière-du-Sud | 92.28 | 915 | Montmagny | 12 |
| 18060 | M | Saint-François-de-la-Rivière-du-Sud | 95.49 | 1585 | Montmagny | 12 |
| 18065 | M | Berthier-sur-Mer | 26.05 | 1356 | Montmagny | 12 |
| 18070 | P | Saint-Antoine-de-l`Isle-aux-Grues | 26.40 | 155 | Montmagny | 12 |
| 19005 | P | Saint-Philémon | 146.51 | 824 | Bellechasse | 12 |