| Index | Thorold | Ontario | National |
| Cost of living | 111 | 113 | 100 |
| Groceries | 115 | 110 | 100 |
| Health care | 106 | 104 | 100 |
| Housing | 107 | 123 | 100 |
| Transportation | 105 | 104 | 100 |
| Utilities | 132 | 121 | 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 |
| Ontario | 8% | 13% |
| State | Income Tax (Low) | Income Tax (High) |
| Ontario | 5.05% | 13.16% |
| City | Population | Cost of Living Index | National Avg. |
| Fort Erie, ON | 32,970 | 108 | 8.3% |
| Pelham, ON | 18,077 | 108 | 8.3% |
| St. Catharines, ON | 140,913 | 108 | 8.5% |
| Niagara-on-the-Lake, ON | 20,111 | 110 | 9.7% |
| Welland, ON | 56,929 | 110 | 9.8% |
| Thorold, ON | 21,396 | 111 | 11.3% |
| City | Population | Cost of Living Index | National Avg. |
| Saint-Lazare, QC | 21,394 | 85 | 14.6% |
| Hays, KS | 21,398 | n/a | |
| Cranbrook, BC | 21,392 | 105 | 4.7% |
| Gardner, MA | 21,410 | n/a | |
| Joliette, QC | 21,376 | 85 | 15.1% |
| Thorold, ON | 21,396 | 111 | 11.3% |