Walnut Creek is a city in Contra Costa County, California, United States, located in the East Bay region of the San Francisco Bay Area, about 16 miles (26 kilometers) east of the city of Oakland. With a total population of 70,127 per the 2020 census, Walnut Creek serves as a vibrant hub for its neighboring cities because of its location at the junction of the highways from Sacramento and San Jose (I-680) and San Francisco/Oakland (SR-24), and its accessibility by BART. Its active downtown neighborhood features hundred-year-old buildings and extensive high-end retail establishments. Many large high density residential buildings are expanding around the downtown that add to the downtown vibe. Most of the apartments rent is $4,000 or more. Walnut Creek has a median home sold price of $1,572,500 (excluding Rossmoor) with a highest home sold price of $4,120,500 as of March 2022. The city shares its borders with Clayton, Lafayette, Alamo, Pleasant Hill, and Concord.