| Index | Old Tappan | New Jersey | National |
| Cost of living | 191 | 125 | 100 |
| Groceries | 108 | 108 | 100 |
| Health care | 111 | 112 | 100 |
| Housing | 379 | 157 | 100 |
| Transportation | 110 | 114 | 100 |
| Utilities | 112 | 111 | 100 |
| Lifestyle & Entertainment | 107 | 113 | 100 |
| Household Items | 108 | 107 | 100 |
| Education & Childcare | 120 | 120 | 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 | $259,401 | $21,617 | $6,052 | $7,783 |
| Renters | $0 | $0 | $0 | $0 |
| State | General Sales Tax | With Max Surtax |
| New Jersey | 6.625% | 12.625% |
| State | Income Tax (Low) | Income Tax (High) |
| New Jersey | 1.4% | 10.75% |
| City | Population | Cost of Living Index | National Avg. |
| Greenville CDP (Greene County), NY | 616 | 106 | 6.1% |
| Paterson, NJ | 149,118 | 122 | 21.5% |
| Mount Ivy, NY | 7,675 | 120 | 20.1% |
| Haverstraw, NY | 12,431 | 121 | 21.4% |
| West Haverstraw, NY | 10,539 | 121 | 21.4% |
| Old Tappan, NJ | 6,114 | 191 | 90.9% |
| City | Population | Cost of Living Index | National Avg. |
| Fountainhead-Orchard Hills, MD | 6,113 | 114 | 14.3% |
| Enola, PA | 6,112 | 95 | 4.9% |
| Hilmar-Irwin, CA | 6,116 | 130 | 30.1% |
| Taos, NM | 6,117 | 108 | 8.2% |
| Gladewater, TX | 6,118 | 89 | 10.8% |
| Old Tappan, NJ | 6,114 | 191 | 90.9% |