Concord, California's largest employers include Mt. Diablo Unified School District, Chevron Credit Center, PG&E, Bank of America Technology Center and John Muir Medical Center Concord Campus. Other large employers are Conco Cement, Contra Costa Water District, Crowne Plaza Hotel, Waterworld USA and retailers such as Costco and Home Depot.
As of 2012, the Mt. Diablo Unified School District is the largest employer with about 4,320 employees, while the Chevron Credit Center and PG&E employed about 1,500 people each. Bank of America Technology Center had 1,300 employees and the John Muir Medical Center had about 1,100 employees. About 31 miles east of San Francisco, Concord is the largest city in Contra Costa County with a population of about 122,000, as of the 2010 census. Mean household income as of 2014 was $82,281.