| Place Name | Rio |
| Place Type | Village |
| ZIP Code(s) | 53960 |
| County | Columbia County |
| Area Code(s) | 274,920 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 971 |
| Population Growth Rate (2010-19) | 5.67% |
| Majority Ethnicity | White 99.09% |
| Metro/Micro Stats Area | Madison, WI |
| US Congressional District(s) | Wisconsin 6th |
| State Assembly Districts | 42 |
| State Senate Districts | 14 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 99.09% |
| African American | 0.61% |
| Hispanic | 0.3% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |