| Index | Old Tappan | New Jersey | National |
| Cost of living | 195 | 119 | 100 |
| Goods & Services | 120 | 104 | 100 |
| Groceries | 108 | 103 | 100 |
| Health care | 130 | 111 | 100 |
| Housing | 379 | 157 | 100 |
| Transportation | 100 | 101 | 100 |
| Utilities | 129 | 101 | 100 |


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| Cost of living index | |
| Goods & Services index | |
| Groceries index | |
| Health care index | |
| Housing index | |
| Transportation index | |
| Utilities 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% |
| Item | Old Tappan | National avg. | Difference |
| Haircut | $35.58 | $27.62 | 28.8% |
| Beauty Salon | $77.98 | $51.11 | 52.6% |
| Toothpaste | $3.98 | $4.09 | 2.8% |
| Shampoo | $1.75 | $1.54 | 13.5% |
| Movie | $18.17 | $12.88 | 41.1% |
| Yoga | $32.45 | $19.66 | 65.0% |
| Item | Old Tappan | National avg. | Difference |
| Ground Beef | $7.15 | $7.70 | 7.2% |
| Fried Chicken | $1.54 | $1.66 | 7.4% |
| Milk | $5.20 | $4.73 | 9.9% |
| Potatoes | $5.64 | $5.26 | 7.3% |
| Pizza | $13.65 | $12.76 | 7.0% |
| Beer | $10.84 | $10.55 | 2.8% |
| Item | Old Tappan | National avg. | Difference |
| Optometrist | $173.75 | $140.06 | 24.1% |
| Doctor | $292.23 | $153.82 | 90.0% |
| Dentist | $142.76 | $123.15 | 15.9% |
| Ibuprofen | $12.11 | $11.73 | 3.2% |
| Lipitor | $21.15 | $23.61 | 10.4% |
| Item | Old Tappan | National avg. | Difference |
| Home Price | $1,437,463.00 | $326,622.00 | 340.1% |
| Avg. Mortgage Payment | $5,693.50 | $2,480.25 | 129.6% |
| Apartment Rent | $3,394.00 | $1,444.00 | 135.0% |
| Item | Old Tappan | National avg. | Difference |
| Gasoline | $3.03 | $3.06 | 0.8% |
| Tire Balancing | $65.87 | $65.21 | 1.0% |
| Item | Old Tappan | National avg. | Difference |
| All Electricity | $319.28 | $220.12 | 45.0% |
| Phone | $201.32 | $195.71 | 2.9% |
| City | Population | Cost of Living Index | National Avg. |
| Greenville CDP (Greene County), NY | 616 | 109 | 8.7% |
| Paterson, NJ | 149,118 | 115 | 14.7% |
| Mount Ivy, NY | 7,675 | 124 | 23.7% |
| Haverstraw, NY | 12,431 | 125 | 25.0% |
| West Haverstraw, NY | 10,539 | 125 | 25.0% |
| Old Tappan, NJ | 6,114 | 195 | 95.2% |
| City | Population | Cost of Living Index | National Avg. |
| Fountainhead-Orchard Hills, MD | 6,113 | 116 | 16.1% |
| Enola, PA | 6,112 | 99 | 0.8% |
| Hilmar-Irwin, CA | 6,116 | 128 | 28.0% |
| Taos, NM | 6,117 | 110 | 9.9% |
| Gladewater, TX | 6,118 | 87 | 13.2% |
| Old Tappan, NJ | 6,114 | 195 | 95.2% |