| Index | Mattituck | New York | National |
| Cost of living | 152 | 121 | 100 |
| Groceries | 104 | 106 | 100 |
| Health care | 108 | 110 | 100 |
| Housing | 253 | 144 | 100 |
| Transportation | 111 | 113 | 100 |
| Utilities | 112 | 112 | 100 |
| Lifestyle & Entertainment | 109 | 111 | 100 |
| Household Items | 104 | 106 | 100 |
| Education & Childcare | 115 | 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 | $134,502 | $11,209 | $3,138 | $4,035 |
| Renters | $0 | $0 | $0 | $0 |
| 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. |
| Dering Harbor, NY | 0 | 110 | 10.2% |
| Riverside village, NY | 634 | 93 | 6.8% |
| Northville village, NY | 1,040 | 101 | 0.9% |
| Calverton, NY | 5,399 | 118 | 18.1% |
| Flanders, NY | 5,277 | 131 | 30.7% |
| Mattituck, NY | 5,017 | 152 | 52.1% |
| City | Population | Cost of Living Index | National Avg. |
| Central Kootenay B, BC | 5,017 | n/a | |
| Carmi, IL | 5,016 | 82 | 17.6% |
| Demarest, NJ | 5,016 | 193 | 93.4% |
| Port Allen, LA | 5,018 | 95 | 5.1% |
| New Haven, MI | 5,018 | 95 | 4.8% |
| Mattituck, NY | 5,017 | 152 | 52.1% |