Largest Employers

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
Overaa & Co
Palecek Imports
Paradigm Management Services
Phillips 66 Company
R J Roberts
Renaissance ClubSport
Robert Half International
Round Hill Country Club
RPM Mortgage
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

largest employers industry chart