| Place Name | Ontario |
| Place Type | Village |
| ZIP Code(s) | 54651 |
| County | Vernon County |
| Area Code(s) | 608 |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 507 |
| Population Growth Rate (2010-19) | -3.61% |
| Majority Ethnicity | White 88.11% |
| US Congressional District(s) | Wisconsin 3rd |
| State Assembly Districts | 96 |
| State Senate Districts | 32 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 88.11% |
| African American | 1.4% |
| Hispanic | 0% |
| Asian | 1.4% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 9.09% |