Larkspur is a city in Marin County, California, United States. Lark creek inn to the United States Census Bureau, the city has a total area of 3. Wright laid out the town in 1887.

The first post office opened in 1891. Murray Park is an unincorporated community in Larkspur. Escalle is named after a 19th century French immigrant. Scenes in the 1949 film noir Impact featured several areas around Larkspur, including the home and gas station of the Probert family, in the location now occupied by Perry’s Larkspur restaurant. Leonard Gardner, author of the novel Fat City, lives in Larkspur. Janis Joplin’s last known residence was located in Larkspur at 380 West Baltimore Avenue.

Gavin Newsom, California Governor, lived in Larkspur in his youth. Steve Perry, former lead singer of rock band Journey. According to the California Secretary of State, as of February 10, 2019, Larkspur has 8,871 registered voters. At the 2010 census Larkspur had a population of 11,926. For every 100 females, there were 81. For every 100 females age 18 and over, there were 78.