Tamalpais-Homestead Valley is a census-designated place (CDP) in Marin County, California, United States.

[4] It is bordered by Mill Valley to the north and Sausalito to the southeast.

It is about 10 minutes north of San Francisco and the Golden Gate Bridge by car.

California State Route 1 (also known as Shoreline Highway and the Pacific Coast Highway) runs through the Valley and is the road most often used to access western Marin County.

Nearby landmarks include the Golden Gate National Recreation Area, Mount Tamalpais State Park, Muir Woods National Monument, Tennessee Valley and Muir Beach.

At the 2000 census there were 10,691 people, 4,558 households, and 2,803 families living in the CDP.

There were 4,646 housing units at an average density of 932.5 per square mile (360.0/km2).

The racial makeup of the CDP in 2010 was 85.0% non-Hispanic White, 0.8% non-Hispanic African American, 0.1% Native American, 5.5% Asian, 0.2% Pacific Islander, 0.3% from other races, and 3.4% from two or more races.

Most of the CDP is in the Mill Valley Elementary School District.