| 54 | Professional, scientific, & technical services | All establishments | 792 | 4134450 | N | 1694992 | 23579 |
| 541 | Professional, scientific, & technical services | All establishments | 792 | 4134450 | N | 1694992 | 23579 |
| 5411 | Legal services | All establishments | 77 | D | N | D | e |
| 54111 | Offices of lawyers | All establishments | 75 | 50172 | N | 18273 | 304 |
| 541110 | Offices of lawyers | All establishments | 75 | 50172 | N | 18273 | 304 |
| 5411101 | Offices of lawyers | All establishments | 70 | 48646 | N | 17698 | 284 |
| 5412 | Accounting, tax preparation, bookkeeping, & payroll services | All establishments | 26 | 34944 | N | 18747 | 353 |
| 54121 | Accounting, tax preparation, bookkeeping, & payroll services | All establishments | 26 | 34944 | N | 18747 | 353 |
| 541211 | Offices of certified public accountants | All establishments | 9 | 26781 | N | 14624 | 201 |
| 541213 | Tax preparation services | All establishments | 8 | D | N | D | c |
| 541219 | Other accounting services | All establishments | 8 | D | N | D | b |
| 5413 | Architectural, engineering, & related services | All establishments | 140 | 912312 | N | 342205 | 5222 |
| 54131 | Architectural services | All establishments | 86 | 289579 | N | 112391 | 1622 |
| 541310 | Architectural services | All establishments | 86 | 289579 | N | 112391 | 1622 |
| 54132 | Landscape architectural services | All establishments | 7 | 10792 | N | 4884 | 91 |
| 541320 | Landscape architectural services | All establishments | 7 | 10792 | N | 4884 | 91 |
| 54133 | Engineering services | All establishments | 40 | 606031 | N | 221843 | 3450 |
| 541330 | Engineering services | All establishments | 40 | 606031 | N | 221843 | 3450 |
| 5414 | Specialized design services | All establishments | 30 | 16881 | N | 7115 | 135 |
| 54141 | Interior design services | All establishments | 9 | D | N | D | b |
| 541410 | Interior design services | All establishments | 9 | D | N | D | b |
| 54143 | Graphic design services | All establishments | 17 | 8418 | N | 4000 | 81 |
| 541430 | Graphic design services | All establishments | 17 | 8418 | N | 4000 | 81 |
| 5415 | Computer systems design & related services | All establishments | 193 | 866323 | N | 395719 | 5612 |
| 54151 | Computer systems design & related services | All establishments | 193 | 866323 | N | 395719 | 5612 |
| 541511 | Custom computer programming services | All establishments | 123 | 613984 | N | 281046 | 3543 |
| 541512 | Computer systems design services | All establishments | 46 | 173670 | N | 70590 | 1040 |
| 5415121 | Computer systems integrators | All establishments | 17 | 153356 | N | 60364 | 889 |
| 5415122 | Computer systems consultants (except systems integrators) | All establishments | 29 | 20314 | N | 10226 | 151 |
| 541519 | Other computer related services | All establishments | 17 | D | N | D | f |
| 5416 | Management, scientific, & technical consulting services | All establishments | 145 | 563019 | N | 226411 | 2517 |
| 54161 | Management consulting services | All establishments | 105 | 368071 | N | 121566 | 1387 |
| 541611 | Admin management & general management consulting services | All establishments | 67 | 275142 | N | 89100 | 978 |
| 541612 | Human resources & executive search consulting services | All establishments | 15 | D | N | D | b |
| 5416122 | Executive placement services | All establishments | 7 | D | N | D | b |
| 5416123 | Human resources and personnel management consulting | All establishments | 7 | D | N | D | b |
| 541613 | Marketing consulting services | All establishments | 15 | 30438 | N | 12312 | 136 |
| 541614 | Process, physical distribution, & logistics consulting services | All establishments | 4 | D | N | D | c |
| 54162 | Environmental consulting services | All establishments | 10 | 26452 | N | 10152 | 170 |
| 541620 | Environmental consulting services | All establishments | 10 | 26452 | N | 10152 | 170 |
| 54169 | Other scientific & technical consulting services | All establishments | 30 | 168496 | N | 94693 | 960 |
| 541690 | Other scientific & technical consulting services | All establishments | 30 | 168496 | N | 94693 | 960 |
| 5416901 | Economic & related consulting services | All establishments | 20 | 121351 | N | 60371 | 506 |
| 5416909 | All other scientific and technical consulting services | All establishments | 10 | 47145 | N | 34322 | 454 |
| 5417 | Scientific research & development services | All establishments | 121 | 1566009 | N | 630995 | 8327 |
| 54171 | Research & development in the phys, engineering & life sciences | All establishments | 94 | 1395017 | N | 562835 | 7119 |
| 541710 | Research & development in the phys, engineering & life sciences | All establishments | 94 | 1395017 | N | 562835 | 7119 |
| 5417101 | Research & development in the physical & engineering sciences | All establishments | 35 | 355210 | N | 134499 | 1779 |
| 5417102 | Research & development in the life sciences | All establishments | 59 | 1039807 | N | 428336 | 5340 |
| 54171023 | Research & development in biotechnology | All establishments | 36 | D | N | D | h |
| 54171029 | Research & development in other life sciences | All establishments | 23 | D | N | D | g |
| 54172 | Research & development in the social sciences & humanities | All establishments | 27 | 170992 | N | 68160 | 1208 |
| 541720 | Research & development in the social sciences & humanities | All establishments | 27 | 170992 | N | 68160 | 1208 |
| 5418 | Advertising & related services | All establishments | 23 | 93547 | N | 44888 | 620 |
| 54181 | Advertising agencies | All establishments | 9 | D | N | D | c |
| 541810 | Advertising agencies | All establishments | 9 | D | N | D | c |
| 54182 | Public relations agencies | All establishments | 11 | 64793 | N | 27529 | 372 |
| 541820 | Public relations agencies | All establishments | 11 | 64793 | N | 27529 | 372 |
| 5419 | Other professional, scientific, & technical services | All establishments | 37 | D | N | D | e |
| 54191 | Marketing research & public opinion polling | All establishments | 15 | 20629 | N | 7252 | 437 |
| 541910 | Marketing research & public opinion polling | All establishments | 15 | 20629 | N | 7252 | 437 |
| 54193 | Translation & interpretation services | All establishments | 3 | D | N | D | a |
| 541930 | Translation & interpretation services | All establishments | 3 | D | N | D | a |
| 54199 | All other professional, scientific, & technical services | All establishments | 13 | 4750 | N | 1542 | 13 |
| 541990 | All other professional, scientific, & technical services | All establishments | 13 | 4750 | N | 1542 | 13 |
| 54 | Professional, scientific, & technical services | Establishments exempt from federal income tax | 30 | 478524 | 465498 | 152429 | 2564 |
| 541 | Professional, scientific, & technical services | Establishments exempt from federal income tax | 30 | 478524 | 465498 | 152429 | 2564 |
| 5417 | Scientific research & development services | Establishments exempt from federal income tax | 25 | 476998 | 464276 | 151854 | 2544 |
| 54171 | Research & development in the phys, engineering & life sciences | Establishments exempt from federal income tax | 14 | D | D | D | g |
| 541710 | Research & development in the phys, engineering & life sciences | Establishments exempt from federal income tax | 14 | D | D | D | g |
| 5417101 | Research & development in the physical & engineering sciences | Establishments exempt from federal income tax | 6 | D | D | D | g |
| 5417102 | Research & development in the life sciences | Establishments exempt from federal income tax | 8 | D | D | D | f |
| 54171029 | Research & development in other life sciences | Establishments exempt from federal income tax | 6 | D | D | D | f |
| 54172 | Research & development in the social sciences & humanities | Establishments exempt from federal income tax | 11 | D | D | D | e |
| 541720 | Research & development in the social sciences & humanities | Establishments exempt from federal income tax | 11 | D | D | D | e |
| 54 | Professional, scientific, & technical services | Establishments subject to federal income tax | 762 | 3655926 | N | 1542563 | 21015 |
| 541 | Professional, scientific, & technical services | Establishments subject to federal income tax | 762 | 3655926 | N | 1542563 | 21015 |
| 5411 | Legal services | Establishments subject to federal income tax | 72 | D | N | D | e |
| 54111 | Offices of lawyers | Establishments subject to federal income tax | 70 | 48646 | N | 17698 | 284 |
| 541110 | Offices of lawyers | Establishments subject to federal income tax | 70 | 48646 | N | 17698 | 284 |
| 5411101 | Offices of lawyers | Establishments subject to federal income tax | 70 | 48646 | N | 17698 | 284 |
| 5412 | Accounting, tax preparation, bookkeeping, & payroll services | Establishments subject to federal income tax | 26 | 34944 | N | 18747 | 353 |
| 54121 | Accounting, tax preparation, bookkeeping, & payroll services | Establishments subject to federal income tax | 26 | 34944 | N | 18747 | 353 |
| 541211 | Offices of certified public accountants | Establishments subject to federal income tax | 9 | 26781 | N | 14624 | 201 |
| 541213 | Tax preparation services | Establishments subject to federal income tax | 8 | D | N | D | c |
| 541219 | Other accounting services | Establishments subject to federal income tax | 8 | D | N | D | b |
| 5413 | Architectural, engineering, & related services | Establishments subject to federal income tax | 140 | 912312 | N | 342205 | 5222 |
| 54131 | Architectural services | Establishments subject to federal income tax | 86 | 289579 | N | 112391 | 1622 |
| 541310 | Architectural services | Establishments subject to federal income tax | 86 | 289579 | N | 112391 | 1622 |
| 54132 | Landscape architectural services | Establishments subject to federal income tax | 7 | 10792 | N | 4884 | 91 |
| 541320 | Landscape architectural services | Establishments subject to federal income tax | 7 | 10792 | N | 4884 | 91 |
| 54133 | Engineering services | Establishments subject to federal income tax | 40 | 606031 | N | 221843 | 3450 |
| 541330 | Engineering services | Establishments subject to federal income tax | 40 | 606031 | N | 221843 | 3450 |
| 5414 | Specialized design services | Establishments subject to federal income tax | 30 | 16881 | N | 7115 | 135 |
| 54141 | Interior design services | Establishments subject to federal income tax | 9 | D | N | D | b |
| 541410 | Interior design services | Establishments subject to federal income tax | 9 | D | N | D | b |
| 54143 | Graphic design services | Establishments subject to federal income tax | 17 | 8418 | N | 4000 | 81 |
| 541430 | Graphic design services | Establishments subject to federal income tax | 17 | 8418 | N | 4000 | 81 |
| 5415 | Computer systems design & related services | Establishments subject to federal income tax | 193 | 866323 | N | 395719 | 5612 |
| 54151 | Computer systems design & related services | Establishments subject to federal income tax | 193 | 866323 | N | 395719 | 5612 |
| 541511 | Custom computer programming services | Establishments subject to federal income tax | 123 | 613984 | N | 281046 | 3543 |
| 541512 | Computer systems design services | Establishments subject to federal income tax | 46 | 173670 | N | 70590 | 1040 |
| 5415121 | Computer systems integrators | Establishments subject to federal income tax | 17 | 153356 | N | 60364 | 889 |
| 5415122 | Computer systems consultants (except systems integrators) | Establishments subject to federal income tax | 29 | 20314 | N | 10226 | 151 |
| 541519 | Other computer related services | Establishments subject to federal income tax | 17 | D | N | D | f |
| 5416 | Management, scientific, & technical consulting services | Establishments subject to federal income tax | 145 | 563019 | N | 226411 | 2517 |
| 54161 | Management consulting services | Establishments subject to federal income tax | 105 | 368071 | N | 121566 | 1387 |
| 541611 | Admin management & general management consulting services | Establishments subject to federal income tax | 67 | 275142 | N | 89100 | 978 |
| 541612 | Human resources & executive search consulting services | Establishments subject to federal income tax | 15 | D | N | D | b |
| 5416122 | Executive placement services | Establishments subject to federal income tax | 7 | D | N | D | b |
| 5416123 | Human resources and personnel management consulting | Establishments subject to federal income tax | 7 | D | N | D | b |
| 541613 | Marketing consulting services | Establishments subject to federal income tax | 15 | 30438 | N | 12312 | 136 |
| 541614 | Process, physical distribution, & logistics consulting services | Establishments subject to federal income tax | 4 | D | N | D | c |
| 54162 | Environmental consulting services | Establishments subject to federal income tax | 10 | 26452 | N | 10152 | 170 |
| 541620 | Environmental consulting services | Establishments subject to federal income tax | 10 | 26452 | N | 10152 | 170 |
| 54169 | Other scientific & technical consulting services | Establishments subject to federal income tax | 30 | 168496 | N | 94693 | 960 |
| 541690 | Other scientific & technical consulting services | Establishments subject to federal income tax | 30 | 168496 | N | 94693 | 960 |
| 5416901 | Economic & related consulting services | Establishments subject to federal income tax | 20 | 121351 | N | 60371 | 506 |
| 5416909 | All other scientific and technical consulting services | Establishments subject to federal income tax | 10 | 47145 | N | 34322 | 454 |
| 5417 | Scientific research & development services | Establishments subject to federal income tax | 96 | 1089011 | N | 479141 | 5783 |
| 54171 | Research & development in the phys, engineering & life sciences | Establishments subject to federal income tax | 80 | D | N | D | h |
| 541710 | Research & development in the phys, engineering & life sciences | Establishments subject to federal income tax | 80 | D | N | D | h |
| 5417101 | Research & development in the physical & engineering sciences | Establishments subject to federal income tax | 29 | D | N | D | e |
| 5417102 | Research & development in the life sciences | Establishments subject to federal income tax | 51 | D | N | D | h |
| 54171023 | Research & development in biotechnology | Establishments subject to federal income tax | 34 | D | N | D | h |
| 54171029 | Research & development in other life sciences | Establishments subject to federal income tax | 17 | D | N | D | g |
| 54172 | Research & development in the social sciences & humanities | Establishments subject to federal income tax | 16 | D | N | D | f |
| 541720 | Research & development in the social sciences & humanities | Establishments subject to federal income tax | 16 | D | N | D | f |
| 5418 | Advertising & related services | Establishments subject to federal income tax | 23 | 93547 | N | 44888 | 620 |
| 54181 | Advertising agencies | Establishments subject to federal income tax | 9 | D | N | D | c |
| 541810 | Advertising agencies | Establishments subject to federal income tax | 9 | D | N | D | c |
| 54182 | Public relations agencies | Establishments subject to federal income tax | 11 | 64793 | N | 27529 | 372 |
| 541820 | Public relations agencies | Establishments subject to federal income tax | 11 | 64793 | N | 27529 | 372 |
| 5419 | Other professional, scientific, & technical services | Establishments subject to federal income tax | 37 | D | N | D | e |
| 54191 | Marketing research & public opinion polling | Establishments subject to federal income tax | 15 | 20629 | N | 7252 | 437 |
| 541910 | Marketing research & public opinion polling | Establishments subject to federal income tax | 15 | 20629 | N | 7252 | 437 |
| 54193 | Translation & interpretation services | Establishments subject to federal income tax | 3 | D | N | D | a |
| 541930 | Translation & interpretation services | Establishments subject to federal income tax | 3 | D | N | D | a |
| 54199 | All other professional, scientific, & technical services | Establishments subject to federal income tax | 13 | 4750 | N | 1542 | 13 |
| 541990 | All other professional, scientific, & technical services | Establishments subject to federal income tax | 13 | 4750 | N | 1542 | 13 |