| Year 2004 | Chicago, Illinois | US | ||||||||
| NAICS | Industry | BLS code/identifier | Payroll Employees | Share of Total Industries | Concentration Index | BLS code/identifier | Payroll Employees | Share of Total Industries | ||
| Total Industries | ENUC169810510 | 3,696,860 | ENUUS00010510 | 108,490,066 | ||||||
| 511 | NAICS 511 Publishing industries, except Internet | ENUC1698105511 | 30,750 | 0.8% | 0.99 | ENUUS000105511 | 907,524 | 0.8% | ||
| 515 | NAICS 515 Broadcasting, except Internet | ENUC1698105515 | 6,447 | 0.2% | 0.58 | ENUUS000105515 | 323,693 | 0.3% | ||
| 516 | NAICS 516 Internet publishing and broadcasting | ENUC1698105516 | ENUUS000105516 | 29,252 | 0.0% | |||||
| 517 | NAICS 517 Telecommunications | ENUC1698105517 | 33,589 | 0.9% | 0.96 | ENUUS000105517 | 1,026,957 | 0.9% | ||
| 522 | NAICS 522 Credit intermediation and related activities | ENUC1698105522 | 116,460 | 3.2% | 1.21 | ENUUS000105522 | 2,813,110 | 2.6% | ||
| 523 | NAICS 523 Securities, commodity contracts, investments | ENUC1698105523 | 45,696 | 1.2% | 1.75 | ENUUS000105523 | 765,202 | 0.7% | ||
| 524 | NAICS 524 Insurance carriers and related activities | ENUC1698105524 | ENUUS000105524 | 2,127,872 | 2.0% | |||||
| 5411 | NAICS 5411 Legal services | ENUC16981055411 | 47,414 | 1.3% | 1.20 | ENUUS0001055411 | 1,159,158 | 1.1% | ||
| 5412 | NAICS 5412 Accounting and bookkeeping services | ENUC16981055412 | 37,684 | 1.0% | 1.34 | ENUUS0001055412 | 825,767 | 0.8% | ||
| 5413 | NAICS 5413 Architectural and engineering services | ENUC16981055413 | ENUUS0001055413 | 1,255,494 | 1.2% | |||||
| 5414 | NAICS 5414 Specialized design services | ENUC16981055414 | 6,227 | 0.2% | 1.49 | ENUUS0001055414 | 122,255 | 0.1% | ||
| 5415 | NAICS 5415 Computer systems design and related services | ENUC16981055415 | 36,596 | 1.0% | 0.94 | ENUUS0001055415 | 1,141,560 | 1.1% | ||
| 5416 | NAICS 5416 Management and technical consulting services | ENUC16981055416 | ENUUS0001055416 | 783,771 | 0.7% | |||||
| 54161 | NAICS 54161 Management consulting services | ENUC169810554161 | 45,829 | 1.2% | 2.06 | ENUUS00010554161 | 653,548 | 0.6% | ||
| 5417 | NAICS 5417 Scientific research and development services | ENUC16981055417 | 27,046 | 0.7% | 1.46 | ENUUS0001055417 | 544,112 | 0.5% | ||
| 5418 | NAICS 5418 Advertising and related services | ENUC16981055418 | 23,281 | 0.6% | 1.59 | ENUUS0001055418 | 430,420 | 0.4% | ||
| 5419 | NAICS 5419 Other professional and technical services | ENUC16981055419 | ENUUS0001055419 | 506,332 | 0.5% | |||||
| 55 | NAICS 55 Management of companies and enterprises | ENUC169810555 | 67,040 | 1.8% | 1.16 | ENUUS0001055 | 1,696,537 | 1.6% | ||
| Median | NAICS 5415 Computer systems design and related services | 36,596 | ||||||||
| Source: http://www.bls.gov/cew/ | ||||||||||