| Place Name | Jefferson (Vernon County) |
| Place Type | Town |
| ZIP Code(s) | 54621 54665 54667 |
| County | Vernon County |
| Area Code(s) | 608 |
| Timezone | Central Daylight Time (CDT) |
| Population (2021) | 1,219 |
| Majority Ethnicity | White 99.13% |
| US Congressional District(s) | Wisconsin 3rd |
| State Assembly Districts | 96 |
| State Senate Districts | 32 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 99.13% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0.17% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0.69% |