Belvedere is a residential incorporated city located on the San Francisco Bay in Marin County, California, United States.

[10] Consisting of two islands and a lagoon, it is connected to the Tiburon Peninsula by two causeways.

The per capita (per person) income of Belvedere residents in 2000 was $250,000, but currently the average income is $283,000,[11] making it one of the highest-income cities in California and the eighth highest-income community in the United States (highest with a population of over 1,000 residents).

Belvedere and Tiburon share a post office and the 94920 ZIP code.

[13] Actress Vivian Vance, who played Ethel on I Love Lucy, died in Belvedere in 1979 at the age of 70.

[14] Depending on where their homes are located, residents of Belvedere enjoy views of San Francisco, Angel Island, Sausalito, the Golden Gate Bridge, San Francisco and Richardson Bays, and Mount Tamalpais.

[citation needed] Houses on Belvedere and Corinthian Islands encompass a range of periods and architectural styles from Victorian to Mediterranean to post-and-beam "mid-century modern".

Many of the homes on Belvedere and Corinthian Islands have docks with access to San Francisco Bay.

A number of Belvedere homes are listed on the National Register of Historic Places; e.g., the Valentine Rey House[15] designed by Willis Polk and built in 1893. Notable designers of homes in Belvedere have included Joseph Esherick, Albert Farr, who designed the Belvedere Land Company building[16] and cottages, Henry Gutterson,[17] and Charles Warren Callister.

New construction has become a contentious issue as residents have become frustrated with large projects that they believe are negatively affecting the character of the community.