| Population | 36 (2010), see rank |
| House Units | 15, see rank |
| Race | Whites:97.2%, Hispanics:5.6%, Blacks:0%, Asians:0%, Others:2.8% |
| Total Area: | 0.43 sq mi |
| Water Area: | 0.01 sq mi (2.08%) |
| State: | Wisconsin |
| Area: | Madison, WI |
| County: | Columbia County |
| City: | Rio |
| Census Tract: | 971000 |
| Census Block Group: | 971000-2 |