| Rank |
Company |
Primary Naics
Description |
Employment |
City |
| 1 |
AT&T Corp |
Telecommunications Resellers |
8570 |
San Ramon |
| 2 |
Summerville Management LLC |
Nursing Care Facilities |
4000 |
San Ramon |
| 3 |
Pacpizza LLC |
Limited-Service Restaurants |
3620 |
San Ramon |
| 4 |
AT&T Services Inc |
Telecommunications Resellers |
3500 |
Walnut Creek |
| 5 |
John Muir Health |
General Medical & Surgical Hospitals |
3100 |
Concord |
| 6 |
Safeway Inc |
Supermarkets & Other Grocery Stores |
2529 |
Walnut Creek |
| 7 |
West Contra Costa Unified Sch |
Elementary & Secondary Schools |
2452 |
Richmond |
| 8 |
Convenience Retailers LLC |
Convenience Stores |
2000 |
San Ramon |
| 9 |
Kaiser Foundation Hospitals |
General Medical & Surgical Hospitals |
2000 |
Walnut Creek |
| 10 |
Diablo Valley College Fndtn |
All Other Support Services |
2000 |
Pleasant Hill |
| 11 |
United States Postal Service |
Postal Service |
1803 |
Concord |
| 12 |
County of Contra Costa |
County Government |
1700 |
Martinez |
| 13 |
John Muir Physician Network |
General Medical & Surgical Hospitals |
1601 |
Walnut Creek |
| 14 |
California State Automobile
Association |
Direct Property & Casualty Insurance
Carriers |
1600 |
Walnut Creek |
| 15 |
Cellco Partnership |
Telecommunications Resellers |
1500 |
Walnut Creek |
| 16 |
John Muir Physician Network |
General Medical & Surgical Hospitals |
1500 |
Concord |
| 17 |
San Ramon Valley Unified |
Elementary & Secondary Schools |
1365 |
Danville |
| 18 |
Mt Diablo Unified School Dist |
Elementary & Secondary Schools |
1359 |
Concord |
| 19 |
California Department of Health |
Administration Of Public Health
Programs |
1355 |
Richmond |
| 20 |
Chevron Corp |
Petroleum Refineries |
1329 |
San Ramon |
| 21 |
Target Corp |
Discount Department Stores |
1262 |
Pinole |
| 22 |
Wal-Mart Stores Inc |
Discount Department Stores |
1150 |
Richmond |
| 23 |
Contra Costa Newspapers Inc |
Newspaper Publishers |
1140 |
Walnut Creek |
| 24 |
County of Contra Costa |
County Government |
1100 |
Martinez |
| 25 |
Antioch Unified School Dist |
Elementary & Secondary Schools |
1089 |
Antioch |
| 26 |
Frances Mary Accessories Inc |
Women's Handbag & Purse
Manufacturing |
1020 |
Lafayette |
| 27 |
Doctors Medical Center |
General Medical & Surgical Hospitals |
937 |
San Pablo |
| 28 |
Saint Mary's College of CA |
Colleges, Universities &
Professional Schools |
900 |
Moraga |
| 29 |
Shell Martinez Refining Co |
Petroleum Refineries |
900 |
Martinez |
| 30 |
Bio-Rad Laboratories Inc |
Analytical Laboratory Instrument
Manufacturing |
900 |
Hercules |
| 31 |
Macy's Department Stores Inc |
Discount Department Stores |
850 |
Concord |
| 32 |
Contra Costa County Office of Ed |
Elementary & Secondary Schools |
850 |
Pleasant Hill |
| 33 |
Texaco Inc |
Other Gasoline Stations |
800 |
San Ramon |
| 34 |
County of Contra Costa |
Executive Offices |
800 |
Martinez |
| 35 |
Home Depot USA Inc |
Home Centers |
800 |
San Ramon |
| 36 |
PMI Group Inc |
Direct Property & Casualty Insurance
Carriers |
757 |
Walnut Creek |
| 37 |
USS Posco Industries |
Iron & Steel Mills |
750 |
Pittsburg |
| 38 |
County of Contra Costa |
Administration Of Public Health
Programs |
700 |
Martinez |
| 39 |
Albertson's LLC |
Supermarkets & Other Grocery Stores |
690 |
Oakley |
| 40 |
Mt Diablo Unified School Dist |
Elementary & Secondary Schools |
686 |
Concord |
| 41 |
Ladbrokes Casino San Pablo |
Other Gambling Industries |
670 |
San Pablo |
| 42 |
United States Postal Service |
Postal Service |
667 |
Richmond |
| 43 |
Braddock & Logan Group, LP |
New Housing Operative Builders |
629 |
Danville |
| 44 |
Pacific Gas & Electric Co |
Electric Bulk Power Transmission &
Control |
606 |
Richmond |
| 45 |
Pittsburg Unified School Dist |
Elementary & Secondary Schools |
605 |
Pittsburg |
| 46 |
Nordstrom Inc |
Family Clothing Stores |
600 |
Walnut Creek |
| 47 |
San Ramon Regional Medical Ctr |
General Medical & Surgical Hospitals |
600 |
San Ramon |
| 48 |
AT&T Services Inc |
Telecommunications Resellers |
600 |
Concord |
| 49 |
Delta Sutter Medical Center |
General Medical & Surgical Hospitals |
560 |
Antioch |
| 50 |
C & H Sugar
Co Inc |
Cane Sugar
Refining |
550 |
Crockett |