| Population | 41 (2010), see rank |
| House Units | 18, see rank |
| Race | Whites:97.6%, Hispanics:0%, Blacks:0%, Asians:2.4%, Others:0% |
| Total Area: | 1.18 sq mi |
| Water Area: | 0.02 sq mi (1.38%) |
| State: | Wisconsin |
| Area: | Madison, WI |
| County: | Columbia County |
| City: | Rio |
| Census Tract: | 971000 |
| Census Block Group: | 971000-4 |