BesaGov

Top federal contractors in California

12,247 SAM.gov-registered federal contractors based in California. Ranked by lifetime federal award amount. Updated 2026-05-07.

Firms tracked
12,247
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 0
2 DEPARTMENT OF EDUCATION CALIFORNIA SACRAMENTO 541720 $7.42B 0
3 SPACE EXPLORATION TECHNOLOGIES CORP. HAWTHORNE 541715 $3.82B 0
4 CALIFORNIA INSTITUTE OF TECHNOLOGY PASADENA 541715 $2.24B 0
5 NATIONAL STEEL AND SHIPBUILDING COMPANY SAN DIEGO 336611 $2.12B 0
6 PUBLIC HEALTH, CALIFORNIA DEPARTMENT OF SACRAMENTO 923120 $1.77B 0
7 THE BOEING COMPANY LONG BEACH 336411 $1.66B 0
8 GENERAL ATOMICS AERONAUTICAL SYSTEMS, INC. POWAY 336411 $1.61B 0
9 RAYTHEON COMPANY EL SEGUNDO 541330 $1.33B 0
10 STATE OF CALIFORNIA EMPLOYMENT DEVELOPMENT DEPARTMENT SACRAMENTO 928110 $1.29B 0
11 THE REGENTS OF THE UNIVERSITY OF CALIFORNIA OAKLAND 611310 $1.05B 0
12 PALANTIR USG INC PALO ALTO 541511 $907.65M 0
13 GENERAL MATTER, INC. SAN FRANCISCO 325180 $900.00M 0
14 REGENTS OF THE UNIVERSITY OF CALIFORNIA, SAN FRANCISCO, THE SAN FRANCISCO 611310 $897.80M 0
15 ANDURIL INDUSTRIES, INC. COSTA MESA 332994 $812.99M 0
16 LOCKHEED MARTIN CORP SUNNYVALE 541715 $801.92M 0
17 THE LELAND STANFORD JUNIOR UNIVERSITY STANFORD — $776.61M 0
18 UNIVERSITY OF CALIFORNIA, SAN DIEGO LA JOLLA 541715 $728.97M 0
19 GRANITE CONSTRUCTION COMPANY GUAM WATSONVILLE 237120 $686.28M 0
20 GRANITE CONSTRUCTION COMPANY WATSONVILLE 237990 $686.18M 0
21 THE BOEING COMPANY EL SEGUNDO — $654.19M 0
22 UNIVERSITY OF CALIFORNIA, LOS ANGELES LOS ANGELES 541715 $616.23M 0
23 RAYTHEON COMPANY EL SEGUNDO 541330 $558.68M 0
24 NEW TECH SOLUTIONS, INC. FREMONT 541519 $503.73M 0
25 TETRA TECH, INC. PASADENA 541320 $491.74M 0
26 UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES 611310 $482.13M 0
27 UNIVERSITY OF CALIFORNIA, DAVIS DAVIS 611310 $480.79M 0
28 NORTHROP GRUMMAN SYSTEMS CORPORATION SAN DIEGO — $470.21M 0
29 AEVEX AEROSPACE, LLC SOLANA BEACH 541350 $442.94M 0
30 CA DEPT OF REHABILITATION SACRAMENTO 722310 $439.34M 0
31 BAE SYSTEMS SAN DIEGO SHIP REPAIR INC. SAN DIEGO 336611 $425.20M 0
32 UNIVERSITY OF CALIFORNIA IRVINE IRVINE 611310 $392.26M 0
33 ECC CONSTRUCTORS LLC BURLINGAME 562119 $391.89M 0
34 AEROVIRONMENT, INC SIMI VALLEY 336411 $387.99M 0
35 REGENTS OF THE UNIVERSITY OF CALIFORNIA, THE BERKELEY 541714 $379.53M 0
36 RQ CONSTRUCTION, LLC CARLSBAD 236220 $348.48M 0
37 NORTHROP GRUMMAN SYSTEMS CORPORATION REDONDO BEACH 541715 $340.87M 0
38 NORTHROP GRUMMAN SYSTEMS CORP PALMDALE 336411 $331.73M 0
39 PATRIOT CONTRACT SERVICES, LLC CONCORD 483111 $309.79M 0
40 ARMTEC DEFENSE PRODUCTS CO. COACHELLA 332993 $300.59M 0
41 NORTHROP GRUMMAN SYSTEMS CORPORATION SUNNYVALE 335313 $297.17M 0
42 AEROJET ROCKETDYNE OF DE, INC CANOGA PARK — $293.78M 0
43 HARPER CONSTRUCTION COMPANY, INC. SAN DIEGO 236220 $283.04M 0
44 VIASAT INC CARLSBAD 334290 $275.09M 0
45 BLUE TECH INC. SAN DIEGO 541519 $274.45M 0
46 AECOM TECHNICAL SERVICES, INC. LOS ANGELES 541330 $264.96M 0
47 GENERAL ATOMICS SAN DIEGO 336413 $261.23M 0
48 TECHFLOW, INC. SAN DIEGO 541320 $245.14M 0
49 CLARK CONSTRUCTION GROUP - CALIFORNIA, LP IRVINE 236220 $244.35M 0
50 LOCKHEED MARTIN CORPORATION PALMDALE 336411 $237.05M 0

Top NAICS in California

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FAQ

How many federal contractors are based in California?

BesaGov tracks 12,247 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.