| Index | Montmagny | Quebec | National |
| Cost of living | 87 | 88 | 100 |
| Groceries | 109 | 109 | 100 |
| Health care | 102 | 102 | 100 |
| Housing | 71 | 74 | 100 |
| Transportation | 101 | 101 | 100 |
| Utilities | 82 | 82 | 100 |
| Lifestyle & Entertainment | n/a | n/a | n/a |
| Household Items | n/a | n/a | n/a |
| Education & Childcare | n/a | n/a | n/a |
| Cost of living index | |
| Groceries index | |
| Health care index | |
| Housing index | |
| Transportation index | |
| Utilities index | |
| Lifestyle index | |
| Household index | |
| Educare index |
| State | General Sales Tax | With Max Surtax |
| Quebec | 9.975% | 14.975% |
| State | Income Tax (Low) | Income Tax (High) |
| Quebec | 15% | 25.75% |
| City | Population | Cost of Living Index | National Avg. |
| Saint-Raphaël, QC | 2,265 | 85 | 15.4% |
| Notre-Dame-du-Rosaire, QC | 386 | 85 | 15.2% |
| La Durantaye, QC | 755 | 85 | 15.2% |
| Saint-Ferréol-les-Neiges, QC | 3,336 | 85 | 15.1% |
| Saint-François-de-l'Île-d'Orléans, QC | 508 | 85 | 15.1% |
| Montmagny, QC | 10,961 | 87 | 13.1% |
| City | Population | Cost of Living Index | National Avg. |
| Roscoe, IL | 10,953 | n/a | |
| Jackson, WY | 10,972 | n/a | |
| Memphis, FL | 10,949 | n/a | |
| Forestville, OH | 10,944 | n/a | |
| Muskegon Heights, MI | 10,979 | n/a | |
| Montmagny, QC | 10,961 | 87 | 13.1% |