| Place Name | West Islip |
| Place Type | Census Designated Place |
| ZIP Code(s) | 11795 |
| County | Suffolk County |
| Area Code(s) | 631,934 |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 28,145 |
| Population Growth Rate (2010-19) | -4.54% |
| Majority Ethnicity | White 88.09% |
| Metro/Micro Stats Area | New York-Newark-Jersey City, NY-NJ-PA |
| US Congressional District(s) | New York 2nd |
| State Assembly Districts | 9,12 |
| State Senate Districts | 4 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 88.09% |
| African American | 0.63% |
| Hispanic | 0.04% |
| Asian | 1.85% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 9.39% |