| Place Name | Underhill |
| Place Type | Town |
| ZIP Code(s) | 54111 54124 54174 |
| County | Oconto County |
| Area Code(s) | 274,920 |
| Timezone | Central Daylight Time (CDT) |
| Population (2021) | 716 |
| Majority Ethnicity | White 93.99% |
| Metro/Micro Stats Area | Green Bay, WI |
| US Congressional District(s) | Wisconsin 8th |
| State Assembly Districts | 36 |
| State Senate Districts | 12 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 93.99% |
| African American | 0% |
| Hispanic | 5.57% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0.44% |