| Index | Cold Spring Harbor | New York | National |
| Cost of living | 235 | 121 | 100 |
| Groceries | 105 | 106 | 100 |
| Health care | 111 | 110 | 100 |
| Housing | 529 | 144 | 100 |
| Transportation | 111 | 113 | 100 |
| Utilities | 110 | 112 | 100 |
| Lifestyle & Entertainment | 106 | 111 | 100 |
| Household Items | 105 | 106 | 100 |
| Education & Childcare | 114 | 118 | 100 |

| Cost of living index | |
| Groceries index | |
| Health care index | |
| Housing index | |
| Transportation index | |
| Utilities index | |
| Lifestyle index | |
| Household index | |
| Educare index |
| Median Income | Per Year | Per Month | Max Budget (28% DTI) | Max Budget (36% DTI) |
| Owners | $373,883 | $31,157 | $8,723 | $11,218 |
| Renters | $274,415 | $22,868 | $6,403 | $8,233 |
| State | General Sales Tax | With Max Surtax |
| New York | 4% | 8.875% |
| State | Income Tax (Low) | Income Tax (High) |
| New York | 4% | 10.9% |
| City | Population | Cost of Living Index | National Avg. |
| Saltaire, NY | 26 | 110 | 9.6% |
| Wyandanch, NY | 11,925 | 125 | 25.1% |
| Central Islip, NY | 34,526 | 128 | 28.1% |
| Brentwood, NY | 64,448 | 129 | 29.5% |
| North Bay Shore, NY | 20,198 | 130 | 29.6% |
| Cold Spring Harbor, NY | 2,967 | 235 | 134.6% |
| City | Population | Cost of Living Index | National Avg. |
| Merrimac, VA | 2,967 | 94 | 6.0% |
| Wawa, ON | 2,967 | n/a | |
| Brandenburg, KY | 2,966 | 93 | 7.2% |
| Shelby, MT | 2,966 | 95 | 5.4% |
| Kingman, KS | 2,968 | 83 | 16.8% |
| Cold Spring Harbor, NY | 2,967 | 235 | 134.6% |