BesaGov

Top federal contractors in California

12,249 SAM.gov-registered federal contractors based in California. Ranked by lifetime federal award amount. Updated 2026-06-23.

Firms tracked
12,249
Top-50 lifetime $
$50.52B
Top NAICS
8

Top 50 federal contractors in California

# Firm City NAICS Lifetime $ Contracts
1 Department Of Transportation California Sacramento 237310 $7.59B 9
2 Department Of Education California Sacramento 541720 $7.42B 4
3 Space Exploration Technologies Corp. Hawthorne 541715 $3.82B 134
4 California Institute Of Technology Pasadena 541715 $2.24B 1,744
5 National Steel And Shipbuilding Company San Diego 336611 $2.12B 38
6 Public Health, California Department Of Sacramento 923120 $1.77B 83
7 The Boeing Company Long Beach 336411 $1.66B 137
8 General Atomics Aeronautical Systems, Inc. Poway 336411 $1.61B 372
9 Raytheon Company El Segundo 541330 $1.33B 571
10 State Of California Employment Development Department Sacramento 928110 $1.29B 8
11 The Regents Of The University Of California Oakland 611310 $1.05B 18
12 Palantir Usg Inc Palo Alto 541511 $907.65M 78
13 General Matter, Inc. San Francisco 325180 $900.00M 2
14 Regents Of The University Of California, San Francisco, The San Francisco 611310 $897.80M 332
15 Anduril Industries, Inc. Costa Mesa 332994 $812.99M 129
16 Lockheed Martin Corp Sunnyvale 541715 $801.92M 100
17 The Leland Stanford Junior University Stanford — $776.61M 247
18 University Of California, San Diego La Jolla 541715 $728.97M 182
19 Granite Construction Company Guam Watsonville 237120 $686.28M 1
20 Granite Construction Company Watsonville 237990 $686.18M 104
21 The Boeing Company El Segundo — $654.19M 22
22 University Of California, Los Angeles Los Angeles 541715 $616.23M 281
23 Raytheon Company El Segundo 541330 $558.68M 285
24 New Tech Solutions, Inc. Fremont 541519 $503.73M 8,309
25 Tetra Tech, Inc. Pasadena 541320 $491.74M 543
26 University Of Southern California Los Angeles 611310 $482.13M 310
27 University Of California, Davis Davis 611310 $480.79M 322
28 Northrop Grumman Systems Corporation San Diego — $470.21M 251
29 Aevex Aerospace, Llc Solana Beach 541350 $442.94M 40
30 Ca Dept Of Rehabilitation Sacramento 722310 $439.34M 102
31 Bae Systems San Diego Ship Repair Inc. San Diego 336611 $425.20M 77
32 University Of California Irvine Irvine 611310 $392.26M 113
33 Ecc Constructors Llc Burlingame 562119 $391.89M 19
34 Aerovironment, Inc Simi Valley 336411 $387.99M 55
35 Regents Of The University Of California, The Berkeley 541714 $379.53M 126
36 Rq Construction, Llc Carlsbad 236220 $348.48M 68
37 Northrop Grumman Systems Corporation Redondo Beach 541715 $340.87M 161
38 Northrop Grumman Systems Corp Palmdale 336411 $331.73M 206
39 Patriot Contract Services, Llc Concord 483111 $309.79M 721
40 Armtec Defense Products Co. Coachella 332993 $300.59M 33
41 Northrop Grumman Systems Corporation Sunnyvale 335313 $297.17M 951
42 Aerojet Rocketdyne Of De, Inc Canoga Park — $293.78M 38
43 Harper Construction Company, Inc. San Diego 236220 $283.04M 60
44 Viasat Inc Carlsbad 334290 $275.09M 715
45 Blue Tech Inc. San Diego 541519 $274.45M 4,183
46 Aecom Technical Services, Inc. Los Angeles 541330 $264.96M 1,558
47 General Atomics San Diego 336413 $261.23M 274
48 Techflow, Inc. San Diego 541320 $245.14M 30
49 Clark Construction Group - California, Lp Irvine 236220 $244.35M 8
50 Lockheed Martin Corporation Palmdale 336411 $237.05M 143

Top NAICS in California

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FAQ

How many federal contractors are based in California?

BesaGov tracks 12,249 SAM.gov-registered firms whose physical state of business is California. The list updates weekly as new entities register or update their SAM profile.

Who are the largest federal contractors in California?

By lifetime federal award amount, the largest California-based contractors include DEPARTMENT OF TRANSPORTATION CALIFORNIA, DEPARTMENT OF EDUCATION CALIFORNIA, SPACE EXPLORATION TECHNOLOGIES CORP.. See the full top-50 list above.

Can I get notified when a new firm registers in California?

Yes. Sign up for the free weekly California digest above. We'll email you new SAM.gov registrations and award activity for the state — no login required.

Is this data official?

Firm registrations come from SAM.gov entity public extracts. Lifetime award totals come from USAspending.gov. Both are official U.S. government data sources, refreshed weekly.