PSC NAICS rankings

Top NAICS paths for PSC R421.

Use this ranking when the research starts with PSC R421 and you want the strongest industry-code pages attached to TECHNICAL ASSISTANCE before moving into deeper intersections.

PSC NAICS rankings

Top NAICS paths

These PSC-scoped rankings are useful when you want a cleaner entry point than the full code page and a faster pivot into geography or industry-lane research.

1

NAICS 541990

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

$3,370,999,470
2

NAICS 541611

9 visible recipients · Administrative Management and General Management Consulting Services

$2,864,447,060
3

NAICS 541511

2 visible recipients · Custom Computer Programming Services

$2,099,935,266
4

NAICS 517110

1 visible recipients · Wired Telecommunications Carriers

$1,338,566,072
5

NAICS 541712

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

$1,037,479,575
6

NAICS 541690

5 visible recipients · Other Scientific and Technical Consulting Services

$494,300,845
7

NAICS 561210

2 visible recipients · Facilities Support Services

$473,261,748
8

NAICS 541618

3 visible recipients · Other Management Consulting Services

$443,039,264
9

NAICS 541512

2 visible recipients · Computer Systems Design Services

$429,326,622
10

NAICS 541519

2 visible recipients · Other Computer Related Services

$426,727,270
11

NAICS 541720

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

$415,688,762
12

NAICS 541620

2 visible recipients · Environmental Consulting Services

$263,370,214
13

NAICS 541330

4 visible recipients · Engineering Services

$252,489,588
14

NAICS 541710

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

$246,332,887
15

NAICS 518210

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

$82,384,344
16

NAICS 237990

1 visible recipients · Other Heavy and Civil Engineering Construction

$81,501,676
17

NAICS 541613

1 visible recipients · Marketing Consulting Services

$61,287,878
18

NAICS 511199

1 visible recipients · All Other Publishers

$50,582,911
19

NAICS 512110

1 visible recipients · Motion Picture and Video Production

$44,093,673
20

NAICS 238220

1 visible recipients · Plumbing, Heating, and Air-Conditioning Contractors

$34,351,681
21

NAICS 541614

1 visible recipients · Process, Physical Distribution, and Logistics Consulting Services

$33,760,572
22

NAICS 531390

1 visible recipients · Other Activities Related to Real Estate

$9,922,960
23

NAICS 562910

1 visible recipients · Remediation Services

$3,992,593
24

NAICS 923120

1 visible recipients · Administration of Public Health Programs

$3,523,566
25

NAICS 561920

1 visible recipients · Convention and Trade Show Organizers

$2,278,514

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