| Place Name | Ronkonkoma |
| Place Type | Census Designated Place |
| ZIP Code(s) | 11779 |
| County | Suffolk County |
| Area Code(s) | 631,934 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 19,346 |
| Population Growth Rate (2010-19) | -0.67% |
| Majority Ethnicity | White 70.07% |
| Metro/Micro Stats Area | New York-Newark-Jersey City, NY-NJ-PA |
| US Congressional District(s) | New York 2nd |
| State Assembly Districts | 5 |
| State Senate Districts | 3 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 70.07% |
| African American | 4.1% |
| Hispanic | 0.01% |
| Asian | 6.95% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 18.87% |