| Index | Old Westbury | New York | National | 
| Cost of living | 384 | 117 | 100 | 
| Goods & Services | 113 | 108 | 100 | 
| Groceries | 105 | 102 | 100 | 
| Health care | 110 | 103 | 100 | 
| Housing | 1,019 | 145 | 100 | 
| Transportation | 102 | 105 | 100 | 
| Utilities | 131 | 100 | 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 | $223,821 | $18,652 | $5,222 | $6,715 | 
| Renters | $236,364 | $19,697 | $5,515 | $7,092 | 
| State | General Sales Tax | With Max Surtax | 
| New York | 4% | 8.875% | 
| State | Income Tax (Low) | Income Tax (High) | 
| New York | 4% | 10.9% | 
| Item | Old Westbury | National avg. | Difference | 
| Haircut | $32.33 | $24.26 | 33.3% | 
| Beauty Salon | $48.56 | $45.56 | 6.6% | 
| Toothpaste | $3.66 | $3.70 | 1.1% | 
| Shampoo | $1.50 | $1.28 | 17.4% | 
| Movie | $13.76 | $12.13 | 13.4% | 
| Bowling | $19.63 | $18.00 | 9.0% | 
| Item | Old Westbury | National avg. | Difference | 
| Ground Beef | $6.34 | $5.84 | 8.6% | 
| Fried Chicken | $1.61 | $1.57 | 2.4% | 
| Milk | $4.73 | $4.67 | 1.2% | 
| Potatoes | $5.03 | $4.93 | 1.9% | 
| Pizza | $10.07 | $12.09 | 16.7% | 
| Beer | $10.62 | $10.41 | 2.0% | 
| Item | Old Westbury | National avg. | Difference | 
| Optometrist | $140.10 | $125.68 | 11.5% | 
| Doctor | $143.23 | $135.78 | 5.5% | 
| Dentist | $123.00 | $113.29 | 8.6% | 
| Ibuprofen | $11.00 | $10.65 | 3.3% | 
| Lipitor | $401.34 | $468.60 | 14.4% | 
| Item | Old Westbury | National avg. | Difference | 
| Home Price | $1,881,300.00 | $184,700.00 | 918.6% | 
| Avg. Mortgage Payment | $1,857.27 | $2,346.69 | 20.9% | 
| Apartment Rent | $0.00 | $949.00 | 100.0% | 
| Item | Old Westbury | National avg. | Difference | 
| Gasoline | $3.33 | $3.46 | 3.7% | 
| Tire Balancing | $57.68 | $59.92 | 3.7% | 
| Item | Old Westbury | National avg. | Difference | 
| All Electricity | $281.67 | $193.99 | 45.2% | 
| Phone | $185.16 | $192.25 | 3.7% | 
| City | Population | Cost of Living Index | National Avg. | 
| Greenville CDP (Greene County), NY | 604 | 106 | 6.1% | 
| Wyandanch, NY | 11,632 | 127 | 26.6% | 
| Hempstead, NY | 55,153 | 136 | 35.8% | 
| Copiague, NY | 23,200 | 133 | 32.8% | 
| Mount Vernon, NY | 67,623 | 137 | 37.4% | 
| Old Westbury, NY | 4,618 | 384 | 284.2% | 
| City | Population | Cost of Living Index | National Avg. | 
| Charlotte Harbor, FL | 4,619 | 95 | 4.8% | 
| Cobleskill, NY | 4,616 | 95 | 4.8% | 
| Barrhead, AB | 4,616 | n/a | |
| Three Points, AZ | 4,620 | 92 | 8.5% | 
| Hawaiian Beaches, HI | 4,621 | 141 | 41.0% | 
| Old Westbury, NY | 4,618 | 384 | 284.2% |