| Index | Saint-Omer | Quebec | National |
| Cost of living | 87 | 88 | 100 |
| Groceries | 109 | 109 | 100 |
| Health care | 102 | 102 | 100 |
| Housing | 70 | 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-Damase-de-L'Islet, QC | 529 | 85 | 14.9% |
| Saint-Pamphile, QC | 2,269 | 87 | 13.5% |
| Tourville, QC | 564 | 87 | 13.2% |
| Saint-Omer, QC | 257 | 87 | 13.3% |
| City | Population | Cost of Living Index | National Avg. |
| Anderson, AL | 257 | n/a | |
| O'Kean, AR | 257 | n/a | |
| Potrero, CA | 257 | n/a | |
| Trinity Village, CA | 257 | n/a | |
| Kirkville, IA | 257 | n/a | |
| Saint-Omer, QC | 257 | 87 | 13.3% |