Belmont is a city in San Mateo County, California, United States. It is a small suburb in the San Francisco Bay Area, located half-way down the San Francisco Peninsula between San Mateo and San Carlos. The population was 25,123 at the 2000 census.
Belmont is mostly made up of residential housing and retail stores. During the 1990s housing demand (and prices) increased dramatically, in large part due to the growth of the nearby headquarters of Oracle Corporation.
Ralston Hall, built around a villa formerly owned by Count Cipriani, an Italian aristocrat, by Bank of California founder William Chapman Ralston, on the campus of Notre Dame de Namur University is a historic landmark. Carlmont High School is located in Belmont.
There were 10,418 households out of which 26.4% had children under the age of 18 living with them, 52.6% were married couples living together, 7.1% had a female householder with no husband present, and 37.2% were non-families. 27.2% of all households were made up of individuals and 7.3% had someone living alone who was 65 years of age or older. The average household size was 2.35 and the average family size was 2.89.
In the city the population was spread out with 19.3% under the age of 18, 6.5% from 18 to 24, 35.9% from 25 to 44, 25.1% from 45 to 64, and 13.2% who were 65 years of age or older. The median age was 39 years. For every 100 females there were 96.7 males. For every 100 females age 18 and over, there were 94.6 males.
The median income for a household in the city was $80,905, and the median income for a family was $95,722. Males had a median income of $63,281 versus $46,957 for females. The per capita income for the city was $42,812. About 1.7% of families and 4.0% of the population were below the poverty line, including 3.2% of those under age 18 and 4.8% of those age 65 or over.