| Place Name | Felts Mills |
| Place Type | Census Designated Place |
| ZIP Code(s) | 13638 |
| County | Jefferson County |
| Area Code(s) | 315,680 |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 255 |
| Population Growth Rate (2010-19) | 27.15% |
| Majority Ethnicity | White 89.51% |
| Metro/Micro Stats Area | Watertown-Fort Drum, NY |
| US Congressional District(s) | New York 21st |
| State Assembly Districts | 117 |
| State Senate Districts | 48 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 89.51% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 5.56% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 4.94% |