| Index | Islandia | New York | National |
| Median home price | $331,100 | $286,300 | $184,700 |
| Median rent asked | $1,884 | $1,159 | $949 |
| Avg. people per household | 2.7 | 2.6 | 2.6 |
| Owner occupied households | 93.2% | 53.6% | 63.6% |
| Renter occupied households | 6.8% | 46.4% | 36.4% |
| Population | Home Price | National Avg. | |
| Stony Brook University, NY | 8,574 | $0 | 100% |
| Ocean Beach, NY | 31 | $0 | 100% |
| Saltaire, NY | 25 | $0 | 100% |
| Middle Island, NY | 11,030 | $274,700 | 49% |
| Wyandanch, NY | 11,632 | $294,200 | 59% |
| Islandia, NY | 3,315 | $331,100 | 79% |
| Population | Home Price | National Avg. | |
| Goldstream, AK | 3,315 | $237,800 | 29% |
| Cutten, CA | 3,315 | $355,700 | 93% |
| Moreland Hills, OH | 3,315 | $445,300 | 141% |
| Masontown, PA | 3,314 | $94,800 | 49% |
| Andrews AFB, MD | 3,316 | $0 | 100% |
| Islandia, NY | 3,315 | $331,100 | 79% |
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