BesaGov

Top federal contractors in California

12,352 SAM.gov-registered federal contractors based in California. Ranked by lifetime federal award amount. Updated 2026-08-08.

Firms tracked
12,352
Top-50 lifetime $
$55.06B
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 Qtc Medical Services Inc San Dimas 621498 $4.16B 135
4 Space Exploration Technologies Corp. Hawthorne 541715 $3.82B 134
5 California Institute Of Technology Pasadena 541715 $2.24B 1,744
6 National Steel And Shipbuilding Company San Diego 336611 $2.12B 38
7 Public Health, California Department Of Sacramento 518210 $1.77B 83
8 The Boeing Company Long Beach 336411 $1.66B 137
9 General Atomics Aeronautical Systems, Inc. Poway 488190 $1.61B 372
10 Raytheon Company El Segundo 541715 $1.33B 571
11 State Of California Employment Development Department Sacramento 928110 $1.29B 8
12 The Regents Of The University Of California Oakland — $1.05B 18
13 Palantir Usg Inc Palo Alto 513210 $907.65M 78
14 General Matter, Inc. San Francisco 325180 $900.00M 2
15 Regents Of The University Of California, San Francisco, The San Francisco 541715 $897.80M 332
16 Parsons Government Services Inc. Pasadena 541611 $869.35M 733
17 Anduril Industries, Inc. Costa Mesa 541511 $812.99M 129
18 Lockheed Martin Corp Sunnyvale 541715 $801.92M 100
19 The Leland Stanford Junior University Stanford 541715 $776.61M 247
20 University Of California, San Diego La Jolla 541715 $728.97M 182
21 Granite Construction Company Guam Watsonville 237120 $686.28M 1
22 Granite Construction Company Watsonville 237310 $686.18M 104
23 The Boeing Company El Segundo — $654.19M 22
24 University Of California, Los Angeles Los Angeles 541940 $616.23M 281
25 Raytheon Company El Segundo 541330 $558.68M 285
26 New Tech Solutions, Inc. Fremont 541519 $503.73M 8,309
27 Tetra Tech, Inc. Pasadena 541620 $491.74M 543
28 University Of Southern California Los Angeles 541990 $482.13M 310
29 University Of California, Davis Davis 621511 $480.79M 322
30 Northrop Grumman Systems Corporation San Diego — $470.21M 251
31 Aevex Aerospace, Llc Solana Beach 541350 $442.94M 40
32 Ca Dept Of Rehabilitation Sacramento 722310 $439.34M 102
33 Bae Systems San Diego Ship Repair Inc. San Diego 336611 $425.20M 77
34 University Of California Irvine Irvine 611310 $392.26M 113
35 Ecc Constructors Llc Burlingame 562119 $391.89M 19
36 Aerovironment, Inc Simi Valley 541715 $387.99M 55
37 Regents Of The University Of California, The Berkeley 541715 $379.53M 126
38 Rq Construction, Llc Carlsbad 236220 $348.48M 68
39 Northrop Grumman Systems Corporation Redondo Beach 541715 $340.87M 161
40 Northrop Grumman Systems Corp Palmdale 336411 $331.73M 206
41 Patriot Contract Services, Llc Concord 483111 $309.79M 721
42 Armtec Defense Products Co. Coachella 332993 $300.59M 33
43 Northrop Grumman Systems Corporation Sunnyvale 335313 $297.17M 951
44 Aerojet Rocketdyne Of De, Inc Canoga Park — $293.78M 38
45 Harper Construction Company, Inc. San Diego 236220 $283.04M 60
46 Viasat Inc Carlsbad 334290 $275.09M 715
47 Blue Tech Inc. San Diego 541519 $274.45M 4,183
48 Aecom Technical Services, Inc. Los Angeles 236220 $264.96M 1,558
49 General Atomics San Diego 336414 $261.23M 274
50 Techflow, Inc. San Diego 811210 $245.14M 30

Top NAICS in California

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FAQ

How many federal contractors are based in California?

BesaGov tracks 12,352 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, QTC MEDICAL SERVICES INC. 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.