| Place Name | Sinclairville |
| Place Type | Village |
| ZIP Code(s) | 14782 |
| County | Chautauqua County |
| Area Code(s) | 716 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 536 |
| Population Growth Rate (2010-19) | -1.53% |
| Majority Ethnicity | White 96.48% |
| Metro/Micro Stats Area | Jamestown-Dunkirk-Fredonia, NY |
| US Congressional District(s) | New York 23rd |
| State Assembly Districts | 150 |
| State Senate Districts | 57 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 96.48% |
| African American | 1.11% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 2.41% |