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 codes are 94904 for street addresses, and 94914 for PO boxes, and are shared with the neighboring community of Greenbrae.
Kentfield is located on the eastern slopes of Mount Tamalpais. It is at 37°57′08″N 122°33′26″W.
The National Weather Service reports that Kentfield’s warmest months are July and August, with an average high of 84 °F (29 °C) and an average low of 53 °F (12 °C). December and January are the coolest months with an average high of 56 °F (13 °C) and an average low of 41 °F (5 °C). The highest temperature on record was 112 °F (44 °C) on July 11, 1913. The lowest temperature recorded was 17 °F (−8 °C) on December 31, 1915. Annually, there are an average of 28.4 days with highs of 90°F (32°C) or higher and 3.2 days with highs of 100°F (38°C) or more. Freezing temperatures (32°F (0°C) or below) occur an average of 4.8 days each year.
Kentfield has one of the highest average rainfalls of any community in the San Francisco Bay Area; normally 47.98 inches (1,219 mm) of rain falls each year on an average of 68.6 days. The most rainfall in a month was 26.95 inches (68.45 cm) in February 1986 and the most in 24 hours was 11.56 inches (27.74 cm) on January 21, 1967. Although heavy snow sometimes falls on nearby Mount Tamalpais, snow is rare in Kentfield; however, traces were reported on January 28 and December 13, 1972.
According to the United States Census Bureau, the CDP has a total area of 3.0 square miles (7.8 km2), of which, 3.0 square miles (7.8 km2) of it is land and 0.52% is water.
In 1857, James Ross (1812–1862) bought Rancho Punta de Quentin. Ross, a Scot who had arrived in San Francisco from Australia in 1848 and made his fortune in the wholesale liquor business, set up a trading post called “Ross Landing”. Steamers would come up Corte Madera Creek to the landing there. Albert Emmett Kent bought the land from the Ross estate in 1871. Kent built an estate called Tamalpais, later applied to the settlement by the railroad. Albert Emmett Kent’s son, William Kent, was a US Congressman, philanthropist and founder of Muir Woods.
The named of the town was changed to Kent in the 1890s, and finally to Kentfield with the opening of the first post office in 1905.