Many well-known companies are headquartered in Contra Costa County, and many others have chosen Contra Costa as their West Coast base of operations, capitalizing on our strategic location in the center of Northern California's mega-region. No matter what mode of transportation your employees, customers, and suppliers prefer – they can reach you in Contra Costa.
Top 20 Largest Employers in Contra Costa County
(all agencies, countywide, in alphabetical order)
Bay Area Rapid Transit (BART), Richmond Bio-Rad Laboratories, Hercules Broadspectrum Americas, Richmond C&H Sugar, Crockett Chevron (various entities), San Ramon and Richmond Contra Costa County (including Health Services), multiple locations John Muir Medical Center, Concord and Walnut Creek Kaiser Permanente, multiple locations La Raza Market, Richmond Longs Drug Store, Walnut Creek Los Mendanos College, Pittsburg Martinez Arts, Martinez Nordstrom, Walnut Creek Oakley Union School District, Oakley Robert Half International, San Ramon and Walnut Creek San Ramon Medical Center, San Ramon Santa Fe Pacific Pipe Lines, Richmond Shell Oil Products, Martinez Sutter Delta Medical Center, Antioch U.S. Veterans Medical Center, Martinez USS POSCO Industries, Pittsburg
Sources: America's Labor Market Information System Database, 1st Quarter 2022, downloaded via State of California Employment Development Department, March 30, 2022; and "Largest Employers in the East Bay", San Francisco Business Times, December 21, 2021.
Largest Private Employers in Unincorporated Contra Costa County
(employers with 100 or more employees in alphabetical order)
AAA of Northern California and Nevada Allied Waste Services Athenian School Biocare Medical Blackhawk Country Club C & H Sugar Company California Grand Casino Del Monte Foods Diablo Country Club Federal Express Corporation Henkel Corporation High End Development KISQ-FM Radio Overaa & Co Palecek Imports Paradigm Management Services Phillips 66 Company R J Roberts Renaissance ClubSport Robert Half International Round Hill Country Club RPM Mortgage Safeway Sams Club Shell Oil Products, U S Tesoro Refining and Marketing
Source: Contra Costa County Treasurer and Tax Collector, January 2018
Largest Employers in Unincorporated County by Industry