| Population | 24 (2010), see rank |
| House Units | 10, see rank |
| Race | Whites:100%, Hispanics:0%, Blacks:0%, Asians:0%, Others:0% |
| Total Area: | 2.89 sq mi |
| Water Area: | 0.04 sq mi (1.34%) |
| State: | Iowa |
| County: | Monona County |
| City: | Castana |
| Census Tract: | 960400 |
| Census Block Group: | 960400-1 |