Kentfield (formerly Ross Landing, Tamalpais, and Kent) is a census-designated place (CDP) in Marin County, California, United States, just north of San Francisco. Kentfield is located on the Northwestern Pacific Railroad 2 miles (3.2 km) southwest of downtown San Rafael, at an elevation of 115 feet (35 m). The population was 6,485 at the 2010 census. The ZIP code is 94904, and is shared with the neighboring community of Greenbrae.
Kentfield is located at 37°57′08″N 122°33′26″W / 37.95222°N 122.55722°W / 37.95222; -122.55722.
According to the United States Census Bureau, the CDP has a total area of 3.0 square miles (7.9 km²), of which, 3.0 square miles (7.8 km²) of it is land and 0.52% is water.