| Index | Old Westbury | New York | National |
| Median home price | $1,881,300 | $286,300 | $184,700 |
| Median rent asked | $0 | $1,159 | $949 |
| Avg. people per household | 2.8 | 2.6 | 2.6 |
| Owner occupied households | 93.4% | 53.6% | 63.6% |
| Renter occupied households | 6.6% | 46.4% | 36.4% |
| Population | Home Price | National Avg. | |
| Greenville CDP (Greene County), NY | 604 | $164,600 | 11% |
| Wyandanch, NY | 11,632 | $294,200 | 59% |
| Roosevelt, NY | 16,522 | $326,900 | 77% |
| Roslyn, NY | 2,888 | $333,000 | 80% |
| North Amityville, NY | 18,890 | $335,700 | 82% |
| Old Westbury, NY | 4,618 | $1,881,300 | 919% |
| Population | Home Price | National Avg. | |
| Charlotte Harbor, FL | 4,619 | $135,500 | 27% |
| Three Points, AZ | 4,620 | $98,600 | 47% |
| Cobleskill, NY | 4,616 | $137,700 | 25% |
| Hawaiian Beaches, HI | 4,621 | $189,100 | 2% |
| Danville, PA | 4,613 | $121,200 | 34% |
| Old Westbury, NY | 4,618 | $1,881,300 | 919% |
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