Agency + PSC NAICS rankings

Top NAICS paths for PSC D399 under Department of Homeland Security.

Use this ranking when the research starts with Department of Homeland Security and PSC D399, and you want the strongest industry-code pages inside that exact buyer + service slice.

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Agency + service NAICS rankings

Top NAICS paths inside Department of Homeland Security + PSC D399

Use these rankings when the buyer-specific PSC page is still too broad and you want the most relevant NAICS pivots inside the same slice.

1

NAICS 541512

74 visible recipients · Computer Systems Design Services

$133,701,236,322
2

NAICS 541330

37 visible recipients · Engineering Services

$77,301,791,557
3

NAICS 541519

64 visible recipients · Other Computer Related Services

$36,912,648,408
4

NAICS 541611

31 visible recipients · Administrative Management and General Management Consulting Services

$19,977,010,629
5

NAICS 541513

24 visible recipients · Computer Facilities Management Services

$18,067,973,818
6

NAICS 541712

8 visible recipients · Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)

$16,355,619,425
7

NAICS 541511

45 visible recipients · Custom Computer Programming Services

$15,415,347,217
8

NAICS 517110

10 visible recipients · Wired Telecommunications Carriers

$10,394,699,094
9

NAICS 518210

14 visible recipients · Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services

$6,355,585,949
10

NAICS 334290

2 visible recipients · Other Communications Equipment Manufacturing

$3,660,935,854
11

NAICS 541990

15 visible recipients · All Other Professional, Scientific, and Technical Services

$1,608,628,508
12

NAICS 488190

1 visible recipients · Other Support Activities for Air Transportation

$1,560,959,296
13

NAICS 541715

9 visible recipients · Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)

$1,530,102,662
14

NAICS 561611

1 visible recipients · Investigation and Personal Background Check Services

$1,466,641,730
15

NAICS 811219

3 visible recipients · Other Electronic and Precision Equipment Repair and Maintenance

$1,221,146,080
16

NAICS 561210

5 visible recipients · Facilities Support Services

$1,086,596,076
17

NAICS 517410

2 visible recipients · Satellite Telecommunications

$1,052,110,874
18

NAICS 517919

1 visible recipients · All Other Telecommunications

$1,006,006,185
19

NAICS 488999

1 visible recipients · All Other Support Activities for Transportation

$722,202,503
20

NAICS 334111

2 visible recipients · Electronic Computer Manufacturing

$598,515,690
21

NAICS 811210

1 visible recipients · Electronic and Precision Equipment Repair and Maintenance

$512,748,300
22

NAICS 611430

4 visible recipients · Professional and Management Development Training

$404,298,414
23

NAICS 238210

1 visible recipients · Electrical Contractors and Other Wiring Installation Contractors

$216,530,542
24

NAICS 333318

1 visible recipients · Other Commercial and Service Industry Machinery Manufacturing

$194,364,789
25

NAICS 541380

2 visible recipients · Testing Laboratories and Services

$150,185,372
26

NAICS 562910

1 visible recipients · Remediation Services

$150,061,977
27

NAICS 511210

8 visible recipients · Software Publishers

$142,108,814
28

NAICS 541219

1 visible recipients · Other Accounting Services

$111,470,088
29

NAICS 541211

1 visible recipients · Offices of Certified Public Accountants

$106,955,990
30

NAICS 541710

2 visible recipients · Research and Development in the Physical, Engineering, and Life Sciences

$93,953,506
31

NAICS 541810

1 visible recipients · Advertising Agencies

$86,106,486
32

NAICS 511199

1 visible recipients · All Other Publishers

$82,346,950
33

NAICS 561320

2 visible recipients · Temporary Help Services

$72,245,301
34

NAICS 541930

1 visible recipients · Translation and Interpretation Services

$59,589,035
35

NAICS 541690

2 visible recipients · Other Scientific and Technical Consulting Services

$56,335,863
36

NAICS 541720

1 visible recipients · Research and Development in the Social Sciences and Humanities

$54,333,290
37

NAICS 611699

1 visible recipients · All Other Miscellaneous Schools and Instruction

$48,650,515
38

NAICS 561612

1 visible recipients · Security Guards and Patrol Services

$47,454,968
39

NAICS 423430

1 visible recipients · Computer and Computer Peripheral Equipment and Software Merchant Wholesalers

$45,517,586
40

NAICS 541612

4 visible recipients · Human Resources Consulting Services

$35,173,645
41

NAICS 334210

1 visible recipients · Telephone Apparatus Manufacturing

$31,534,344
42

NAICS 541620

2 visible recipients · Environmental Consulting Services

$25,681,453
43

NAICS 519120

1 visible recipients · Libraries and Archives

$22,879,107
44

NAICS 541618

4 visible recipients · Other Management Consulting Services

$21,284,346
45

NAICS 561599

1 visible recipients · All Other Travel Arrangement and Reservation Services

$20,596,097
46

NAICS 488310

1 visible recipients · Port and Harbor Operations

$19,762,768
47

NAICS 339112

1 visible recipients · Surgical and Medical Instrument Manufacturing

$18,489,347
48

NAICS 811310

1 visible recipients · Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance

$13,849,032
49

NAICS 561990

1 visible recipients · All Other Support Services

$12,204,516
50

NAICS 561110

2 visible recipients · Office Administrative Services

$11,066,441

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