Concord, California is located 29 miles east of San Francisco, adjacent to beautiful Mt. Diablo. The city covers 31.13 square miles. With a 2010 census count of 122,067 residents, it is the largest city in Contra Costa County. Concord provides ready access to San Francisco, Napa Valley, Silicon Valley and Sacramento. This convenient, central location, along with a temperate climate, allows residents to enjoy a wide variety of unique and scenic attractions within the immediate Bay Area as well as throughout Northern California.