Demographics & People — Water Mill, New York
Population Overview
| Population (Census) | 2,218 |
| Estimated 2026 | ~4,600 |
| Median Age | 54.9 |
| Total Households | 1,080 |
| Family Households | 727 |
| Average Household Size | 2.04 |
| Diversity Index | N/A (N/A) |
Race & Ethnicity
| White | 1,956 |
| Black or African American | 11 |
| Asian | 49 |
| Hispanic or Latino | 230 |
Heritage & Ancestry
| Group | Count |
| Unclassified or not reported | 489 |
| Other groups | 362 |
| German | 328 |
| Irish | 309 |
| Polish | 282 |
| Russian | 264 |
| Eastern European | 224 |
| Hispanic: Hispanic or Latino | 207 |
| Italian | 163 |
| Hispanic: Spaniard | 157 |
Language
| English Only | 1,843 |
| Spanish | 173 |
| Population 5+ | 2,123 |
Veterans
| Veterans | 35 |
| Population 18+ | 2,052 |
Source: Census ACS 5-Year 2023; Census ACS 5-Year 2023, Table B01003; Census ACS 5-Year 2023, B19013. Data for Water Mill, New York.