| Index | Sarnia | Ontario | National |
| Cost of living | 110 | 113 | 100 |
| Groceries | 115 | 110 | 100 |
| Health care | 106 | 104 | 100 |
| Housing | 104 | 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. |
| Enniskillen, ON | 2,704 | 108 | 8.2% |
| Petrolia, ON | 6,108 | 109 | 8.8% |
| Plympton-Wyoming, ON | 8,517 | 110 | 10.1% |
| Sarnia 45, ON | 627 | 111 | 10.6% |
| Point Edward, ON | 2,173 | 111 | 10.7% |
| Sarnia, ON | 74,477 | 110 | 10.5% |
| City | Population | Cost of Living Index | National Avg. |
| Redlands, CA | 74,429 | n/a | |
| Southfield, MI | 74,641 | n/a | |
| Pawtucket, RI | 74,311 | n/a | |
| Wood Buffalo, AB | 74,298 | 92 | 7.9% |
| Maple Grove, MN | 74,291 | n/a | |
| Sarnia, ON | 74,477 | 110 | 10.5% |