| Place Name | Jefferson (Monroe County) |
| Place Type | Town |
| ZIP Code(s) | 54619 54648 |
| County | Monroe County |
| Area Code(s) | 608 |
| Timezone | Central Standard Time (CST) |
| Population (2021) | 889 |
| Majority Ethnicity | White 96.9% |
| US Congressional District(s) | Wisconsin 3rd |
| State Assembly Districts | 96 |
| State Senate Districts | 32 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 96.9% |
| African American | 1.44% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.66% |