Ross (formerly, Sunnyside is a small incorporated town in Marin County, California, United States, just north of San Francisco. Ross is located 1.5 miles (2.4 km) west-southwest of San Rafael, at an elevation of 36 feet (11 m). The population was 2,329 at the 2000 census. The town is bordered by Kentfield and Greenbrae to the east, Larkspur to the south and San Anselmo to the north.
James Ross settled at the spot in 1859. The first post office opened in 1887. Ross incorporated in 1908.
As of the census of 2000, there were 2,329 people, 761 households, and 626 families residing in the town. The population density was 1,461.5 people per square mile (565.6/km²). There were 805 housing units at an average density of 505.2/sq mi (195.5/km²). The racial makeup of the town was 96.09% White, 0.13% African American, 0.09% Native American, 1.42% Asian, 0.17% Pacific Islander, 0.39% from other races, and 1.72% from two or more races. Hispanic or Latino of any race were 2.32% of the population.
There were 761 households out of which 44.3% had children under the age of 18 living with them, 72.0% were married couples living together, 7.0% had a female householder with no husband present, and 17.7% were non-families. 12.7% of all households were made up of individuals and 5.3% had someone living alone who was 65 years of age or older. The average household size was 2.94 and the average family size was 3.21.
In the town the population was spread out with 30.2% under the age of 18, 3.4% from 18 to 24, 21.3% from 25 to 44, 32.8% from 45 to 64, and 12.4% who were 65 years of age or older. The median age was 42 years. For every 100 females there were 94.9 males. For every 100 females age 18 and over, there were 86.0 males.
The median income for a household in the town was $102,015, and the median income for a family was $102,593. Males had a median income of $75,784 versus $52,083 for females. The per capita income for the town was $51,150. About 5.6% of families and 8.5% of the population were below the poverty line, including 6.2% of those under age 18 and 5.7% of those age 65 or over.