Detailed Bureau of the Census (BOC) Industry Groupings*
| 010-011 | Ag Production |
| 012-030 (020-021) | Ag Services |
| 031-032 (030-031) | Forestry & Fisheries |
| 042 | Oil and Gas Extraction |
| 040-041, 050 | Metal/Coal/Nonmetal Mining |
| 060 | Construction |
| 100-122 | Food & Kindred Prod MFG |
| 132-150 | Textile Mill Prod MFG |
| 151-152 | Apparel & Other Textile Pr MFG |
| 160-162 | Paper & Allied Products MFG |
| 171-172 | Printing/Publishing/Allied MFG |
| 180-192, 200-201, 210-212 | Chemical/Petroleum/Rubber MFG |
| 230-241 | Lumber & Wood MFG |
| 242 | Furniture MFG |
| 250-262 | Stone/Clay/Concrete MFG |
| 270-280 | Primary Metals MFG |
| 281-300 | Fabricated Metals MFG |
| 301 | NS Metal Ind |
| 310-332 | Mach, Ex Elect MFG |
| 340-350 | Elect Mach, Equip Supplies MFG |
| 351 | Motor Vehicles Equip |
| 352 | Aircraft & Parts MFG |
| 360-370 | Other Transport Equip MFG |
| 371-381 | Prof & Photo Equip/Watches MFG |
| 390 | Toys/Amusement/Sporting Goods |
| 130, 220-222, 391-392 | Misc & NEC MFG Industries |
| 410-411 | Trucking/Warehousing/Storage |
| 400-402, 412-432 | Other Transportation |
| 441 | Telephone Communications |
| 440, 442 | Other Communications |
| 450 (460) | Electric Light and Power |
| 451-472 (461-472) | Other Utility/Sanitary Service |
| 500-571 | Wholesale Trade |
| 601-611 | Food Stores |
| 612-622 | Motor Veh/Auto Supply Dealer |
| 623-630 (630-631) | Apparel & Accessory Stores |
| 641 | Eating & Drinking Places |
| 580-600, 631-640, 642-691 (580-600, 632-640, 642-691) | Other Retail Trade |
| 700-710 | Banking and Other Finance |
| 711-712 | Insurance and Real Estate |
| 761 | Private Household Services |
| 721-741 (721-742) | Business Services |
| 742-760 (750-760) | Automobile and Repair Services |
| 762-791 | Pers Serv Exc Priv Household |
| 800-810 (800-802) | Entertainment & Rec Services |
| 831 | Hospitals |
| 812-830, 832-840 | Health Services, Exc Hosp |
| 842-860 | Educational Services |
| 841, 861-893 (861-892) | Other Professional Services |
| 910 | Justice, Pub Order, & Safety |
| 922 | Admin of Hum Res Programs |
| 932 | National Sec/Internal Affairs |
| 900-901, 921, 930-931 | Other Pub Admin |
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*1980 and 1990
Bureau of the Census Alphabetical Index. †Code groupings were, for the most part, identical for the 1980 and 1990 BOC industry codes. Where differences do occur, the 1980 code groupings are provided in parentheses. |