| Population | 1 (2010), see rank |
| House Units | 1, see rank |
| Race | Whites:100%, Hispanics:0%, Blacks:0%, Asians:0%, Others:0% |
| Total Area: | 0.48 sq mi |
| Water Area: | 0.04 sq mi (8.19%) |
| State: | Iowa |
| Area: | Fort Madison-Keokuk, IA-MO |
| County: | Lee County |
| City: | Fort Madison |
| Census Tract: | 490200 |
| Census Block Group: | 490200-3 |