| Population | 66 (2010), see rank |
| House Units | 31, see rank |
| Race | Whites:92.4%, Hispanics:3%, Blacks:3%, Asians:0%, Others:4.5% |
| Total Area: | 0.04 sq mi |
| Water Area: | 0.00 sq mi (0.00%) |
| State: | Iowa |
| Area: | Boone, IA |
| County: | Boone County |
| City: | Madrid |
| Census Tract: | 020500 |
| Census Block Group: | 020500-3 |