| Value | Category |
|---|---|
| 000 | NIU (not in universe) |
| 105 | Agriculture |
| 106 | Own farm |
| 116 | Forestry |
| 126 | Fisheries |
| 136 | Hunting |
| 206 | Metal mining |
| 216 | Coal mining |
| 226 | Crude petroleum and natural gas extraction |
| 236 | Nonmetallic mining and quarrying, except fuel |
| 239 | Mining, not specified |
| 246 | Construction |
| 306 | Logging |
| 307 | Sawmills, planing mills, and mill work |
| 308 | Miscellaneous wood products |
| 309 | Furniture and fixtures |
| 316 | Glass and glass products |
| 317 | Cement, concrete, gypsum and plaster products |
| 318 | Structural clay products |
| 319 | Pottery and related products |
| 326 | Miscellaneous nonmetallic mineral and stone products |
| 336 | Blast furnaces, steel works, and rolling mills |
| 337 | Other primary iron and steel industries |
| 338 | Primary nonferrous industries |
| 346 | Fabricated steel products |
| 347 | Fabricated nonferrous metal products |
| 348 | Not specified metal industries |
| 356 | Agricultural machinery and tractors |
| 357 | Office and store machines and devices |
| 358 | Miscellaneous machinery |
| 367 | Electrical machinery, equipment, and supplies |
| 376 | Motor vehicles and motor vehicle equipment |
| 377 | Aircraft and parts |
| 378 | Ship and boat building and repairing |
| 379 | Railroad and miscellaneous transportation equipment |
| 386 | Professional equipment and supplies |
| 387 | Photographic equipment and supplies |
| 388 | Watches, clocks, and clockwork-operated devices |
| 399 | Miscellaneous manufacturing industries |
| 406 | Meat products |
| 407 | Dairy products |
| 408 | Canning and preserving fruits, vegetables, and seafoods |
| 409 | Grain-mill products |
| 416 | Bakery products |
| 417 | Confectionery and related products |
| 418 | Beverage industries |
| 419 | Miscellaneous food preparations and kindred products |
| 426 | Not specified food industries |
| 429 | Tobacco manufactures |
| 436 | Knitting mills |
| 437 | Dyeing and finishing textiles, except knit goods |
| 438 | Carpets, rugs, and other floor coverings |
| 439 | Yarn, thread, and fabric mills |
| 446 | Miscellaneous textile mill products |
| 448 | Apparel and accessories |
| 449 | Miscellaneous fabricated textile products |
| 456 | Pulp, paper, and paperboard mills |
| 457 | Paperboard containers and boxes |
| 458 | Miscellaneous paper and pulp products |
| 459 | Printing, publishing, and allied industries |
| 466 | Synthetic fibers |
| 467 | Drugs and medicines |
| 468 | Paints, varnishes, and related products |
| 469 | Miscellaneous chemicals and allied products |
| 476 | Petroleum refining |
| 477 | Miscellaneous petroleum and coal products |
| 478 | Rubber products |
| 487 | Leather: tanned, curried, and finished |
| 488 | Footwear, except rubber |
| 489 | Leather products, except footwear |
| 499 | Not specified manufacturing industries |
| 506 | Railroads and railway express service |
| 516 | Street railways and bus lines |
| 526 | Trucking service |
| 527 | Warehousing and storage |
| 536 | Taxicab service |
| 546 | Water transportation |
| 556 | Air transportation |
| 567 | Petroleum and gasoline pipe lines |
| 568 | Services incidental to transportation |
| 578 | Telephone |
| 579 | Telegraph |
| 586 | Electric light and power |
| 587 | Gas and steam supply systems |
| 588 | Electric-gas utilities |
| 596 | Water supply |
| 597 | Sanitary services |
| 598 | Other and not specified utilities |
| 606 | Motor vehicles and equipment |
| 607 | Drugs, chemicals, and allied products |
| 608 | Dry goods apparel |
| 609 | Food and related products |
| 616 | Electrical goods, hardware, and plumbing equipment |
| 617 | Machinery, equipment, and supplies |
| 618 | Petroleum products |
| 619 | Farm products--raw materials |
| 626 | Miscellaneous wholesale trade |
| 627 | Not specified wholesale trade |
| 636 | Food stores, except dairy products |
| 637 | Dairy products stores and milk retailing |
| 646 | General merchandise stores |
| 647 | Five and ten cent stores |
| 656 | Apparel and accessories stores, except shoe |
| 657 | Shoe stores |
| 658 | Furniture and house furnishing stores |
| 659 | Household appliance and radio stores |
| 667 | Motor vehicles and accessories retailing |
| 668 | Gasoline service stations |
| 669 | Drug stores |
| 679 | Eating and drinking places |
| 686 | Hardware and farm implement stores |
| 687 | Lumber and building material retailing |
| 688 | Liquor stores |
| 689 | Retail florists |
| 696 | Jewelry stores |
| 697 | Fuel and ice retailing |
| 698 | Miscellaneous retail stores |
| 699 | Not specified retail trade |
| 716 | Banking and credit agencies |
| 726 | Security and commodity brokerage and investment companies |
| 736 | Insurance |
| 746 | Real estate |
| 756 | Real estate-insurance-law offices |
| 806 | Advertising |
| 807 | Accounting, auditing, and bookkeeping services |
| 808 | Miscellaneous business services |
| 816 | Auto repair services and garages |
| 817 | Miscellaneous repair services |
| 826 | Private households |
| 836 | Hotels and lodging places |
| 846 | Laundering, cleaning, and dyeing services |
| 847 | Dressmaking shops |
| 848 | Shoe repair shops |
| 849 | Miscellaneous personal services |
| 856 | Radio broadcasting and television |
| 857 | Theaters and motion pictures |
| 858 | Bowling alleys, and billiard and pool parlors |
| 859 | Miscellaneous entertainment and recreation services |
| 868 | Medical and other health services, except hospitals |
| 869 | Hospitals |
| 879 | Legal services |
| 888 | Educational services |
| 896 | Welfare and religious services |
| 897 | Nonprofit membership organizations |
| 898 | Engineering and architectural services |
| 899 | Miscellaneous professional and related services |
| 900 | Library, museum, and other related institutions |
| 906 | Postal service |
| 916 | Federal public administration |
| 926 | State public administration |
| 936 | Local public administration |
| 946 | Public Administration, level not specified |
| 976 | Common or General laborer |
| 982 | Housework at home |
| 983 | School response (students, etc.) |
| 984 | Retired |
| 986 | Sick or disabled |
| 987 | Institution response |
| 991 | Lady/Man of leisure |
| 995 | Non-industrial response |
| 997 | Nonclassifiable |
| 998 | Industry not reported |
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