| Population | 7 (2010), see rank |
| House Units | 5, see rank |
| Race | Whites:85.7%, Hispanics:42.9%, Blacks:0%, Asians:0%, Others:14.3% |
| Total Area: | 4.85 sq mi |
| Water Area: | 0.00 sq mi (0.00%) |
| State: | California |
| Area: | San Francisco-Oakland-Fremont, CA |
| County: | Marin County |
| City: | Nicasio |
| Census Tract: | 133000 |
| Census Block Group: | 133000-1 |