Mill Valley is a city in Marin County, California, United States, located about 14 miles north of San Francisco via the Golden Gate Bridge and 52 miles from Napa Valley. The population was 14,231 at the 2020 census.
AdFind the best tours, tickets, trips & more. Compare prices and book online on Tripadvisor. Full refund available up to 24 hours before your tour date. Quick & easy purchase process.