Walnut Creek station is an elevated Bay Area Rapid Transit (BART) station in Walnut Creek, California, served by the Yellow Line. The station is located north of downtown Walnut Creek, adjacent to Interstate 680 and near the Ygnacio Valley Road and California Boulevard arterial roads.

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 east of the city of Oakland. Walnut Creek has a total population of 70,127 per the 2020 census, is located at the junction of the highways from Sacramento and San Jose (I-680) and San Francisco/Oakland (SR-24), and is accessible by BART. The city shares its borders with Clayton, Lafayette, Alamo, Pleasant Hill, and Concord.