|
541
|
Professional, scientific, & technical services
|
4,363
| 17,967,225
| 6,679,110
| 83,525
|
|
5411
|
Legal services
|
1,424
| 9,208,095
| 3,366,192
| 34,831
|
|
54111
|
Offices of lawyers
|
1,390
| 9,169,252
| 3,351,840
| 34,578
|
|
5411102
|
Legal aid societies & similar legal services
|
53
| 55,752
| 23,307
| 499
|
|
54119
|
Other legal services
|
34
| 38,843
| 14,352
| 253
|
|
541191
|
Title abstract & settlement offices
|
19
| 16,702
| 6,141
| 119
|
|
541199
|
All other legal services
|
15
| 22,141
| 8,211
| 134
|
|
5412
|
Accounting, tax preparation, bookkeeping, & payroll services
|
188
| 826,895
| 335,742
| 5,679
|
|
54121
|
Accounting, tax preparation, bookkeeping, & payroll services
|
188
| 826,895
| 335,742
| 5,679
|
|
541211
|
Offices of certified public accountants
|
114
| 774,197
| 303,080
| 4,250
|
|
541213
|
Tax preparation services
|
31
| 8,404
| 2,678
| 454
|
|
541214
|
Payroll services
|
15
| 23,703
| 19,821
| 778
|
|
541219
|
Other accounting services
|
28
| 20,591
| 10,163
| 197
|
|
5413
|
Architectural, engineering, & related services
|
303
| 918,973
| 366,267
| 5,636
|
|
54131
|
Architectural services
|
153
| 449,216
| 168,482
| 2,624
|
|
54132
|
Landscape architectural services
|
16
| 10,185
| 3,672
| 68
|
|
54133
|
Engineering services
|
127
| 454,781
| 192,338
| 2,858
|
|
54134
|
Drafting services
|
1
| D
| D
| (1-19)
|
|
54135
|
Building inspection services
|
2
| D
| D
| (1-19)
|
|
54136
|
Geophysical surveying & mapping services
|
1
| D
| D
| (1-19)
|
|
54137
|
Surveying & mapping (except geophysical) services
|
2
| D
| D
| (20-99)
|
|
54138
|
Testing laboratories
|
1
| D
| D
| (1-19)
|
|
5414
|
Specialized design services
|
140
| 170,123
| 61,732
| 1,145
|
|
54141
|
Interior design services
|
46
| 96,826
| 34,983
| 640
|
|
54142
|
Industrial design services
|
1
| D
| D
| (1-19)
|
|
54143
|
Graphic design services
|
90
| 72,894
| 26,643
| 503
|
|
54149
|
Other specialized design services
|
3
| D
| D
| (1-19)
|
|
5415
|
Computer systems design & related services
|
456
| 1,051,878
| 398,424
| 7,132
|
|
541511
|
Custom computer programming services
|
118
| 192,906
| 97,904
| 1,570
|
|
541512
|
Computer systems design services
|
221
| 420,064
| 160,519
| 2,898
|
|
5415121
|
Computer systems integrators
|
73
| 135,104
| 48,549
| 859
|
|
5415122
|
Computer systems consultants (except systems integrators)
|
148
| 284,960
| 111,970
| 2,039
|
|
541513
|
Computer facilities management services
|
83
| 337,370
| 121,348
| 1,940
|
|
541519
|
Other computer related services
|
34
| 101,538
| 18,653
| 724
|
|
5416
|
Management, scientific, & technical consulting services
|
899
| 2,484,067
| 926,983
| 11,445
|
|
54161
|
Management consulting services
|
691
| 1,976,895
| 710,737
| 8,920
|
|
541611
|
Admin management & general management consulting services
|
455
| 1,514,217
| 541,863
| 6,588
|
|
541612
|
Human resources & executive search consulting services
|
96
| 300,689
| 101,195
| 1,273
|
|
5416121
|
Actuarial consulting
|
5
| D
| D
| (20-99)
|
|
5416122
|
Executive placement services
|
37
| D
| D
| (100-249)
|
|
5416123
|
Human resources and personnel management consulting
|
54
| 244,664
| 78,150
| 932
|
|
541613
|
Marketing consulting services
|
87
| 82,127
| 25,871
| 409
|
|
541614
|
Process, physical distribution, & logistics consulting services
|
26
| 60,077
| 30,500
| 497
|
|
541618
|
Other management consulting services
|
27
| 19,785
| 11,308
| 153
|
|
54162
|
Environmental consulting services
|
45
| 83,002
| 32,461
| 509
|
|
54169
|
Other scientific & technical consulting services
|
163
| 424,170
| 183,785
| 2,016
|
|
5416901
|
Economic & related consulting services
|
118
| 301,520
| 133,789
| 1,290
|
|
5416909
|
All other scientific and technical consulting services
|
45
| 122,650
| 49,996
| 726
|
|
5417
|
Scientific research & development services
|
302
| 2,001,442
| 645,475
| 10,046
|
|
54171
|
Research & development in the phys, engineering & life sciences
|
130
| 1,241,517
| 326,518
| 5,169
|
|
5417101
|
Research & devopment in the physical & engineering sciences
|
85
| 365,463
| 118,817
| 1,869
|
|
5417102
|
Research & development in the life sciences
|
45
| 876,054
| 207,701
| 3,300
|
|
54171023
|
Research & development in biotechnology
|
13
| 42,382
| 9,808
| 138
|
|
54171029
|
Research & development in other life sciences
|
32
| 833,672
| 197,893
| 3,162
|
|
54172
|
Research & development in the social sciences & humanities
|
172
| 759,925
| 318,957
| 4,877
|
|
5418
|
Advertising & related services
|
474
| 1,105,603
| 508,836
| 6,072
|
|
54181
|
Advertising agencies
|
47
| 147,682
| 67,213
| 959
|
|
54182
|
Public relations agencies
|
394
| 905,284
| 422,700
| 4,807
|
|
54183
|
Media buying services
|
6
| 4,953
| 2,191
| 25
|
|
54184
|
Media representatives
|
3
| D
| D
| (1-19)
|
|
5418401
|
Radio & television advertising representatives
|
1
| D
| D
| (1-19)
|
|
5418402
|
Publishers' advertising representatives
|
2
| D
| D
| (1-19)
|
|
54185
|
Display advertising
|
3
| D
| D
| (1-19)
|
|
54186
|
Direct mail advertising
|
8
| 25,071
| 12,233
| 175
|
|
54189
|
Other services related to advertising
|
13
| D
| D
| (20-99)
|
|
5418902
|
Advertising specialties goods distributor
|
7
| 14,904
| 2,892
| 57
|
|
5418903
|
Sign painting & lettering shop
|
2
| D
| D
| (1-19)
|
|
5418909
|
All other advertising services
|
4
| 4,764
| 908
| 37
|
|
5419
|
Other professional, scientific, & technical services
|
177
| 200,149
| 69,459
| 1,539
|
|
54191
|
Marketing research & public opinion polling
|
57
| 103,417
| 38,601
| 839
|
|
54192
|
Photographic services
|
28
| 6,558
| 1,745
| 71
|
|
541921
|
Photography studios, portrait
|
14
| 3,203
| 860
| 36
|
|
541922
|
Commercial photography
|
14
| 3,355
| 885
| 35
|
|
54193
|
Translation & interpretation sevices
|
12
| 21,979
| 3,604
| 81
|
|
541930
|
Translation & interpretation services
|
12
| 21,979
| 3,604
| 81
|
|
54194
|
Veterinary services
|
14
| 14,096
| 6,955
| 163
|
|
54199
|
All other professional, scientific, & technical services
|
66
| 54,099
| 18,554
| 385
|
District of Columbia 
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