See study by J. S. Ackerman (1954).
Situated on the Tiburon Peninsula, between Richardson Bay and the Town of Tiburon, Belvedere consists of two "islands" and the lagoon (Belvedere Lagoon) between them. The larger of the two islands is Belvedere Island, and the smaller one is Corinthian Island, which is shared with Tiburon.
The city has a total area of , of which is land and (78%) is water.
The first settlers arrived in the late 1800s, then the railroad came and Tiburon was the last stop for passengers and cargo heading to San Francisco and beyond. The Belvedere Lagoon was partially filled after World War II to provide building sites for tract houses and to improve access to Belvedere Island. It was also once the home to a 9 hole golf course.
The City Hall was formerly a Presbyterian Church. It was moved to its present location on San Rafael Avenue in 1949.
Belvedere sits on the south side of the tip of Tiburon Peninsula, a small peninsula that extends into the San Francisco Bay. Many Belvedere properties are renowned for their spectacular views of the Bay Area, Angel Island, San Francisco, Sausalito, the Golden Gate Bridge and Mount Tamalpais. As a result, land values are extremely high. As of 2000, 87.6% of the city's owner-occupied housing units cost more than $1,000,000, compared with 2.3% for California as a whole.
Many houses in Belvedere fall under the Victorian Style of architecture.Some Belvedere homes are featured on "The Home Tour" every May. With a recent flood of attention and demand for housing in Belevedere, housing and building has become a contentious issue as older members of the community have increasingly become frustrated with the large construction projects being developed in what once was a more humble community.
No restaurants or stores are allowed in Belvedere, and the city enforces strict rules regarding house design and setbacks in order to preserve trees, views, and the town's spacious, wooded character. The adjacent city of Tiburon, however, is home to a wide range of services, shops, and eateries.
Originally a fishing based community, Belvedere has grown into a sailing community where the San Francisco Yacht Club is located. Belvedere Park is also located in Belvedere.
There were 956 households out of which 24.0% had children under the age of 18 living with them, 62.4% were married couples living together, 4.9% had a female householder with no husband present, and 31.3% were non-families. 27.0% of all households were made up of individuals and 15.3% had someone living alone who was 65 years of age or older. The average household size was 2.22 and the average family size was 2.68.
In the city the population was spread out with 20.0% under the age of 18, 2.2% from 18 to 24, 14.9% from 25 to 44, 35.8% from 45 to 64, and 27.1% who were 65 years of age or older. For every 100 females there were 86.1 males. For every 100 females age 18 and over, there were 83.1 males.
The median income for a household in the city was $130,796, and the median income for a family was $185,590. The per capita income for the city was $113,595. About 2.9% of families and 5.7% of the population were below the poverty line, including 4.3% of those under age 18 and 4.5% of those age 65 or over.
Largely because of the high cost of housing, the median age of residents in 2000 (52.7 years) was much higher than that for California as a whole (33.3 years).
It is the only town in Marin County, to have more registered Republicans than Democrats, the former outnumbering the latter by 8 people.