| Population | 20 (2010), see rank |
| House Units | 4, see rank |
| Race | Whites:90%, Hispanics:10%, Blacks:0%, Asians:0%, Others:10% |
| Total Area: | 0.02 sq mi |
| Water Area: | 0.00 sq mi (0.00%) |
| State: | Washington |
| Area: | Portland-Vancouver-Hillsboro, OR-WA |
| County: | Skamania County |
| City: | Underwood |
| Census Tract: | 950400 |
| Census Block Group: | 950400-2 |