| Population | 18 (2010), see rank |
| House Units | 7, see rank |
| Race | Whites:88.9%, Hispanics:5.6%, Blacks:0%, Asians:0%, Others:11.1% |
| Total Area: | 0.00 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 |