| Index | Saint-Antonin | Quebec | National |
| Cost of living | 97 | 88 | 100 |
| Groceries | 104 | 109 | 100 |
| Health care | 92 | 102 | 100 |
| Housing | 69 | 74 | 100 |
| Transportation | 96 | 101 | 100 |
| Utilities | 149 | 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-Joseph-de-Kamouraska, QC | 369 | 96 | 4.2% |
| Saint-Modeste, QC | 1,219 | 96 | 4.1% |
| Sainte-Hélène-de-Kamouraska, QC | 899 | 85 | 15.0% |
| Saint-Clément, QC | 441 | 96 | 3.8% |
| Saint-Alexandre-de-Kamouraska, QC | 2,129 | 96 | 3.8% |
| Saint-Antonin, QC | 4,204 | 97 | 2.7% |
| City | Population | Cost of Living Index | National Avg. |
| St. Joseph, IL | 4,205 | n/a | |
| Pipestone, MN | 4,205 | n/a | |
| Perth South, ON | 4,205 | 108 | 8.4% |
| Vermilion, AB | 4,205 | 92 | 8.0% |
| Bellaire, OH | 4,202 | n/a | |
| Saint-Antonin, QC | 4,204 | 97 | 2.7% |