| Place Name | Fairfield Township (DeKalb County) |
| Place Type | Township |
| ZIP Code(s) | 46705 46730 46747 46793 |
| County | DeKalb County |
| Area Code(s) | 260 |
| Timezone | Eastern Standard Time (EST) |
| Population (2021) | 1,225 |
| Majority Ethnicity | White 100% |
| Metro/Micro Stats Area | Auburn, IN |
| US Congressional District(s) | Indiana 3rd |
| State House Districts | 52 |
| State Senate Districts | 13 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 100% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |