Walnut Creek is a city in
Contra Costa County, California, United States, located east of the city of
Oakland in the
East Bay region of the
San Francisco Bay Area. Although it is not as large as neighboring
Concord, Walnut Creek serves as a hub for the neighboring cities within central Contra Costa County, due in part to its location at the junction of the highways from
Sacramento and
San Jose (
I-680) and San Francisco/Oakland (
SR-24), as well as its accessibility by
BART. The city's total estimated population, as of 2014, is 67,673.