| Place Name | Fairfield Township (Lycoming County) |
| Place Type | Township |
| ZIP Code(s) | 17754 17756 |
| County | Lycoming County |
| Area Code(s) | 272,570 |
| Timezone | Eastern Standard Time (EST) |
| Population (2021) | 2,810 |
| Majority Ethnicity | White 94.23% |
| Metro/Micro Stats Area | Williamsport, PA |
| US Congressional District(s) | Pennsylvania 10th |
| State House Districts | 84 |
| State Senate Districts | 23 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 94.23% |
| African American | 1.19% |
| Hispanic | 0.11% |
| Asian | 2.9% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.56% |