| Index | Selwyn | Ontario | National |
| Cost of living | 109 | 113 | 100 |
| Groceries | 115 | 110 | 100 |
| Health care | 106 | 104 | 100 |
| Housing | 100 | 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. |
| Otonabee-South Monaghan, ON | 7,229 | 109 | 8.7% |
| Curve Lake First Nation 35, ON | 1,098 | 109 | 9.1% |
| Peterborough, ON | 89,500 | 109 | 9.2% |
| Douro-Dummer, ON | 6,892 | 110 | 10.2% |
| Selwyn, ON | 17,047 | 109 | 9.1% |
| City | Population | Cost of Living Index | National Avg. |
| Ham Lake, MN | 17,046 | n/a | |
| Madison, NJ | 17,048 | n/a | |
| East Highland Park, VA | 17,051 | n/a | |
| Pendleton, OR | 17,038 | n/a | |
| Lemay, MO | 17,056 | n/a | |
| Selwyn, ON | 17,047 | 109 | 9.1% |