The Town of Danville is located in the San Ramon Valley in Contra Costa County, California. It is one of the incorporated municipalities in California that uses “town” in its name instead of “city”. The population was 42,039 in 2010. According to Businessweek, Danville is the 41st most expensive zip code in America. Danville is one of California’s top 25 wealthiest cities, and one of the wealthiest suburbs of Oakland and San Francisco. Danville is home to some of the most expensive real estate and exclusive country clubs in the nation.
Interstate 680 serves as the main means of transport out of the town.
According to the United States Census Bureau, the town has a total area of 18.0 square miles (47 km2), all of it land.
Danville is set in a narrow section of the San Ramon Valley with the Las Trampas Ridge to the west and the Diablo Range to the east. The most prominent landmark of Danville is the backdrop of Mount Diablo, which stands to the east at 3,849 feet (1,173 m) and provides a picturesque backdrop for Danville and neighboring towns and cities. Sycamore Creek drains some of the Mount Diablo slopes and flows through Danville.