| Population | 5 (2010), see rank |
| House Units | 5, see rank |
| Race | Whites:100%, Hispanics:0%, Blacks:0%, Asians:0%, Others:0% |
| Total Area: | 1.84 sq mi |
| Water Area: | 0.03 sq mi (1.82%) |
| State: | Iowa |
| County: | Monona County |
| City: | Castana |
| Census Tract: | 960100 |
| Census Block Group: | 960100-2 |