| Place Name | Fairfield |
| Place Type | Town |
| ZIP Code(s) | 13350 13365 13406 13416 |
| County | Herkimer County |
| Area Code(s) | 315,680 |
| Timezone | Eastern Standard Time (EST) |
| Population (2021) | 1,542 |
| Majority Ethnicity | White 98.65% |
| Metro/Micro Stats Area | Utica-Rome, NY |
| US Congressional District(s) | New York 22nd |
| State Assembly Districts | 118 |
| State Senate Districts | 49 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 98.65% |
| African American | 0.39% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0.96% |