| Index | St. Thomas | Ontario | National |
| Cost of living | 110 | 113 | 100 |
| Groceries | 115 | 110 | 100 |
| Health care | 106 | 104 | 100 |
| Housing | 103 | 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. |
| Malahide, ON | 9,817 | 108 | 8.2% |
| Chippewas of the Thames First Nation 42, ON | 866 | 108 | 8.5% |
| Dutton/Dunwich, ON | 4,136 | 109 | 8.7% |
| London, ON | 421,456 | 109 | 8.8% |
| Aylmer, ON | 8,327 | 110 | 9.7% |
| St. Thomas, ON | 42,918 | 110 | 10.2% |
| City | Population | Cost of Living Index | National Avg. |
| Vaudreuil-Dorion, QC | 42,920 | 86 | 13.6% |
| Spring Hill, TN | 42,910 | n/a | |
| Bremerton, WA | 42,880 | n/a | |
| Boucherville, QC | 42,869 | 87 | 13.1% |
| Shakopee, MN | 42,849 | n/a | |
| St. Thomas, ON | 42,918 | 110 | 10.2% |