| Index | Leslie Valley | Newmarket | Ontario |
| Cost of living | 108 | 109 | 113 |
| Groceries | 115 | 115 | 110 |
| Health care | 106 | 106 | 104 |
| Housing | 96 | 98 | 123 |
| Transportation | 105 | 105 | 104 |
| Utilities | 132 | 132 | 121 |
| 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. |
| Richmond Hill, ON | 215,407 | 109 | 9.0% |
| Markham, ON | 359,111 | 109 | 9.5% |
| Vaughan, ON | 321,974 | 110 | 9.6% |
| East Gwillimbury, ON | 25,899 | 110 | 9.7% |
| Whitchurch-Stouffville, ON | 52,025 | 110 | 9.8% |
| Newmarket, ON | 88,702 | 109 | 8.7% |
| City | Population | Cost of Living Index | National Avg. |
| Hawthorne, CA | 88,587 | n/a | |
| St. George, UT | 88,946 | n/a | |
| Avondale, AZ | 88,981 | n/a | |
| Fayetteville, AR | 89,091 | n/a | |
| Bryan, TX | 88,156 | n/a | |
| Newmarket, ON | 88,702 | 109 | 8.7% |