| Index | Smithtown | New York | National |
| Median home price | $1,003,966 | $503,498 | $326,622 |
| Median rent asked | $2,240 | $1,761 | $1,444 |
| Avg. people per household | 2.4 | 2.6 | 2.6 |
| Owner occupied households | 89.8% | 53.6% | 63.6% |
| Renter occupied households | 10.2% | 46.4% | 36.4% |

| Population | Home Price | National Avg. | |
| Stony Brook University, NY | 8,775 | $0 | 100% |
| Ocean Beach, NY | 32 | $0 | 100% |
| Middle Island, NY | 11,454 | $488,301 | 50% |
| Wyandanch, NY | 11,925 | $532,585 | 63% |
| Central Islip, NY | 34,526 | $540,392 | 65% |
| Smithtown, NY | 27,027 | $1,003,966 | 207% |
| Population | Home Price | National Avg. | |
| Sun City West, AZ | 27,025 | $431,558 | 32% |
| East St. Louis, IL | 27,033 | $96,566 | 70% |
| Canyon Lake, TX | 27,035 | $440,086 | 35% |
| Clarksburg, MD | 27,008 | $950,321 | 191% |
| Bessemer, AL | 27,005 | $180,763 | 45% |
| Smithtown, NY | 27,027 | $1,003,966 | 207% |