BesaGov

Top federal contractors in South Carolina

1,172 SAM.gov-registered federal contractors based in South Carolina. Ranked by lifetime federal award amount. Updated 2026-06-23.

Firms tracked
1,172
Top-50 lifetime $
$12.56B
Top NAICS
8

Top 50 federal contractors in South Carolina

# Firm City NAICS Lifetime $ Contracts
1 Fluor Marine Propulsion, Llc Greenville 541715 $4.37B 2
2 Savannah River Nuclear Solutions Llc Aiken 561210 $3.22B 3
3 South Carolina Department Of Education West Columbia 541720 $1.21B 6
4 Central Plateau Cleanup Company, Llc Aiken 562910 $716.23M 9
5 Palmetto Gba, Llc Columbia 541990 $306.38M 35
6 Southern Ohio Cleanup Company Llc Aiken 562910 $230.25M 3
7 Companion Data Services Llc Columbia 518210 $218.29M 12
8 Advanced Technology International Summerville 325414 $208.57M 124
9 So-Pak-Co, Inc Mullins 311611 $176.21M 567
10 The Medical University Of South Carolina Charleston 541380 $170.64M 216
11 University Of South Carolina Columbia 541715 $155.66M 85
12 Fluor Intercontinental, Inc Greenville 541715 $120.91M 49
13 Detyens Shipyards Inc N Charleston 336611 $115.55M 94
14 Fluor Federal Services Inc Greenville 561210 $79.21M 23
15 Atlas Technologies, Inc. North Charleston 541715 $76.71M 186
16 South Carolina Commission For Blind Columbia 722310 $67.29M 9
17 County Of Horry Myrtle Beach 324110 $65.79M 482
18 Elevated Technologies, Inc Charleston 561210 $64.93M 184
19 Us Foods Inc Lexington 311999 $57.97M 9,585
20 Natural Resources South Carolina Department Columbia 541990 $54.64M 7
21 Itc Defense Corp North Charleston 481211 $52.72M 62
22 Farmers Telephone Cooperative, Inc. Kingstree 517111 $46.85M 5
23 Diversified Protection Corp Daniel Island 561612 $45.05M 99
24 Msi-Defence Systems Us, Llc Rock Hill 332994 $44.56M 13
25 Eos Inc Charleston 333618 $42.21M 302
26 Fn America Llc Columbia 332994 $40.84M 455
27 Life Cycle Engineering Inc North Charleston 541715 $40.71M 134
28 South Carolina State University Orangeburg 611310 $39.83M 7
29 Westinghouse Government Services Llc Hopkins 334517 $36.97M 49
30 Orbis Sibro Inc Charleston 541330 $36.27M 73
31 Vgs Infrastructure Services Inc Greenville 561210 $33.68M 36
32 Keenan Ft Detrick Energy Llc Columbia 221118 $32.80M 2
33 Adapt Forward Llc North Charleston 541715 $31.20M 5
34 Stratton Securities Inc. Hilton Head 332311 $29.91M 8
35 Nar Medical Depot, Llc Greer 339114 $27.12M 1,534
36 Marinex Construction Inc Charleston Sc 237990 $25.84M 23
37 Technica Llc Charleston 811121 $25.01M 50
38 Boyer Commercial Construction Inc Columbia 236220 $23.33M 25
39 Metal Trades, Llc Yonges Island 336611 $22.48M 50
40 Commit Enterprises Inc N Charleston 336611 $21.88M 104
41 Trident Technical College Charleston 611310 $21.28M 5
42 Transox Inc West Columbia 532283 $20.51M 81
43 Netrist Solutions, Llc Charleston 541511 $19.82M 3
44 Vgs Aircraft Services, Inc. Greenville 488119 $18.19M 26
45 Chandler Construction Services, Inc. Ninety Six 237110 $17.04M 3
46 Senn Bros., Inc. West Columbia 311991 $16.86M 34,963
47 Southern Dredging Co Inc Charleston 237990 $16.63M 27
48 Nexgen Data Systems Inc North Charleston 541715 $16.17M 19
49 Usvetserv, Llc Simpsonville 326111 $15.63M 102
50 Rpi-Css, Llc Columbia 541620 $15.32M 12

Top NAICS in South Carolina

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FAQ

How many federal contractors are based in South Carolina?

BesaGov tracks 1,172 SAM.gov-registered firms whose physical state of business is South Carolina. The list updates weekly as new entities register or update their SAM profile.

Who are the largest federal contractors in South Carolina?

By lifetime federal award amount, the largest South Carolina-based contractors include FLUOR MARINE PROPULSION, LLC, SAVANNAH RIVER NUCLEAR SOLUTIONS LLC, SOUTH CAROLINA DEPARTMENT OF EDUCATION. See the full top-50 list above.

Can I get notified when a new firm registers in South Carolina?

Yes. Sign up for the free weekly South Carolina 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.