NAICS code finder

Type a kind of work to find its NAICS code. Each code shows how many companies in the record win federal awards under it, and links to them.

Kind of work or code

834 codes

115310 Support activities for forestry1,422 companies
236220 Commercial and institutional building construction1,258 companies
541715 Research and development in the physical, engineering, and life sciences (except nanotechnology and biotechnology)1,042 companies
541330 Engineering services997 companies
541519 Other computer related services737 companies
541611 Administrative management and general management consulting services697 companies
336413 Other aircraft parts and auxiliary equipment manufacturing499 companies
541511 Custom computer programming services477 companies
561210 Facilities support services459 companies
541512 Computer systems design services436 companies
541990 All other professional, scientific, and technical services428 companies
238220 Plumbing, heating, and air-conditioning contractors392 companies
334516 Analytical laboratory instrument manufacturing359 companies
339113 Surgical appliance and supplies manufacturing347 companies
237310 Highway, street, and bridge construction330 companies
334511 Search, detection, navigation, guidance, aeronautical, and nautical system and instrument manufacturing312 companies
336611 Ship building and repairing291 companies
513210 Software publishers285 companies
811210 Electronic and precision equipment repair and maintenance269 companies
324110 Petroleum refineries257 companies
237990 Other heavy and civil engineering construction248 companies
811310 Commercial and industrial machinery and equipment (except automotive and electronic) repair and maintenance244 companies
339112 Surgical and medical instrument manufacturing233 companies
238210 Electrical contractors and other wiring installation contractors227 companies
541620 Environmental consulting services222 companies
561720 Janitorial services204 companies
561730 Landscaping services202 companies
334111 Electronic computer manufacturing194 companies
562910 Remediation services193 companies
518210 Computing infrastructure providers, data processing, web hosting, and related services192 companies
334220 Radio and television broadcasting and wireless communications equipment manufacturing191 companies
541690 Other scientific and technical consulting services189 companies
623110 Nursing care facilities (skilled nursing facilities)187 companies
621910 Ambulance services184 companies
541380 Testing laboratories and services169 companies
334519 Other measuring and controlling device manufacturing168 companies
334419 Other electronic component manufacturing158 companies
334290 Other communications equipment manufacturing156 companies
611430 Professional and management development training156 companies
561320 Temporary help services155 companies
611310 Colleges, universities, and professional schools154 companies
311999 All other miscellaneous food manufacturing150 companies
621111 Offices of physicians (except mental health specialists)150 companies
238990 All other specialty trade contractors148 companies
541310 Architectural services144 companies
561612 Security guards and patrol services140 companies
237110 Water and sewer line and related structures construction138 companies
332510 Hardware manufacturing136 companies
423450 Medical, dental, and hospital equipment and supplies merchant wholesalers133 companies
488190 Other support activities for air transportation129 companies
721110 Hotels (except casino hotels) and motels124 companies
238160 Roofing contractors123 companies
335999 All other miscellaneous electrical equipment and component manufacturing123 companies
561621 Security systems services (except locksmiths)123 companies
333310 Commercial and service industry machinery manufacturing121 companies
332999 All other miscellaneous fabricated metal product manufacturing120 companies
334510 Electromedical and electrotherapeutic apparatus manufacturing115 companies
481211 Nonscheduled chartered passenger air transportation114 companies
562111 Solid waste collection112 companies
336411 Aircraft manufacturing110 companies
332994 Small arms, ordnance, and ordnance accessories manufacturing103 companies
541714 Research and development in biotechnology (except nanobiotechnology)102 companies
336412 Aircraft engine and engine parts manufacturing100 companies
532412 Construction, mining, and forestry machinery and equipment rental and leasing99 companies
339999 All other miscellaneous manufacturing98 companies
532120 Truck, utility trailer, and rv (recreational vehicle) rental and leasing97 companies
541370 Surveying and mapping (except geophysical) services97 companies
541614 Process, physical distribution, and logistics consulting services97 companies
325412 Pharmaceutical preparation manufacturing96 companies
335312 Motor and generator manufacturing96 companies
532490 Other commercial and industrial machinery and equipment rental and leasing96 companies
333914 Measuring, dispensing, and other pumping equipment manufacturing93 companies
337214 Office furniture (except wood) manufacturing93 companies
315990 Apparel accessories and other apparel manufacturing92 companies
333415 Air-conditioning and warm air heating equipment and commercial and industrial refrigeration equipment manufacturing91 companies
311991 Perishable prepared food manufacturing90 companies
561990 All other support services90 companies
621112 Offices of physicians, mental health specialists90 companies
621511 Medical laboratories90 companies
485999 All other transit and ground passenger transportation89 companies
541199 All other legal services89 companies
541930 Translation and interpretation services87 companies
541713 Research and development in nanotechnology86 companies
811111 General automotive repair86 companies
562991 Septic tank and related services84 companies
722310 Food service contractors83 companies
238290 Other building equipment contractors82 companies
333998 All other miscellaneous general purpose machinery manufacturing81 companies
611710 Educational support services79 companies
511210 Software publishers77 companies
334515 Instrument manufacturing for measuring and testing electricity and electrical signals76 companies
541720 Research and development in the social sciences and humanities76 companies
332911 Industrial valve manufacturing75 companies
334412 Bare printed circuit board manufacturing75 companies
335931 Current-carrying wiring device manufacturing75 companies
334513 Instruments and related products manufacturing for measuring, displaying, and controlling industrial process variables73 companies
333618 Other engine equipment manufacturing71 companies
333120 Construction machinery manufacturing69 companies
481212 Nonscheduled chartered freight air transportation69 companies
221310 Water supply and irrigation systems68 companies
335311 Power, distribution, and specialty transformer manufacturing67 companies
336612 Boat building67 companies
541612 Human resources consulting services (2007), human resources and executive search consulting services (2002)67 companies
923120 Administration of public health programs67 companies
221122 Electric power distribution66 companies
541513 Computer facilities management services66 companies
315210 Cut and sew apparel contractors65 companies
621999 All other miscellaneous ambulatory health care services64 companies
237130 Power and communication line and related structures construction62 companies
332919 Other metal valve and pipe fitting manufacturing62 companies
519290 Web search portals and all other information services60 companies
325413 In-vitro diagnostic substance manufacturing59 companies
334310 Audio and video equipment manufacturing59 companies
524114 Direct health and medical insurance carriers59 companies
561611 Investigation and personal background check services59 companies
517111 Wired telecommunications carriers58 companies
517410 Satellite telecommunications57 companies
623990 Other residential care facilities57 companies
336390 Other motor vehicle parts manufacturing56 companies
333613 Mechanical power transmission equipment manufacturing55 companies
325998 All other miscellaneous chemical product and preparation manufacturing54 companies
622110 General medical and surgical hospitals54 companies
624221 Temporary shelters53 companies
483111 Deep sea freight transportation52 companies
238910 Site preparation contractors51 companies
332311 Prefabricated metal building and component manufacturing51 companies
332991 Ball and roller bearing manufacturing51 companies
311812 Commercial bakeries50 companies
334118 Computer terminal and other computer peripheral equipment manufacturing50 companies
561110 Office administrative services49 companies
335910 Battery manufacturing47 companies
541110 Offices of lawyers47 companies
221210 Natural gas distribution46 companies
333924 Industrial truck, tractor, trailer, and stacker machinery manufacturing46 companies
335313 Switchgear and switchboard apparatus manufacturing46 companies
561920 Convention and trade show organizers46 companies
333517 Machine tool manufacturing45 companies
531120 Lessors of nonresidential buildings (except miniwarehouses)45 companies
562211 Hazardous waste treatment and disposal45 companies
332722 Bolt, nut, screw, rivet, and washer manufacturing44 companies
332993 Ammunition (except small arms) manufacturing44 companies
531190 Lessors of other real estate property44 companies
236210 Industrial building construction43 companies
336211 Motor vehicle body manufacturing43 companies
325120 Industrial gas manufacturing42 companies
326199 All other plastics product manufacturing42 companies
532111 Passenger car rental42 companies
336320 Motor vehicle electrical and electronic equipment manufacturing41 companies
621399 Offices of all other miscellaneous health practitioners41 companies
333413 Industrial and commercial fan and blower and air purification equipment manufacturing40 companies
336992 Military armored vehicle, tank, and tank component manufacturing40 companies
339940 Office supplies (except paper) manufacturing40 companies
541618 Other management consulting services39 companies
238320 Painting and wall covering contractors38 companies
314999 All other miscellaneous textile product mills38 companies
336212 Truck trailer manufacturing38 companies
623220 Residential mental health and substance abuse facilities38 companies
722320 Caterers38 companies
813920 Professional organizations38 companies
115210 Support activities for animal production37 companies
311421 Fruit and vegetable canning37 companies
335314 Relay and industrial control manufacturing37 companies
336110 Automobile and light duty motor vehicle manufacturing37 companies
332216 Saw blade and handtool manufacturing36 companies
332439 Other metal container manufacturing36 companies
611699 All other miscellaneous schools and instruction36 companies
485991 Special needs transportation35 companies
334517 Irradiation apparatus manufacturing34 companies
423430 Computer and computer peripheral equipment and software merchant wholesalers34 companies
332710 Machine shops33 companies
425120 Wholesale trade agents and brokers33 companies
812320 Drycleaning and laundry services (except coin-operated)33 companies
212321 Construction sand and gravel mining32 companies
333248 All other industrial machinery manufacturing32 companies
339991 Gasket, packing, and sealing device manufacturing32 companies
541350 Building inspection services32 companies
541940 Veterinary services32 companies
611512 Flight training32 companies
337215 Showcase, partition, shelving, and locker manufacturing31 companies
484210 Used household and office goods moving31 companies
493110 General warehousing and storage31 companies
611519 Other technical and trade schools31 companies
812930 Parking lots and garages31 companies
236118 Residential remodelers30 companies
238330 Flooring contractors30 companies
315250 Cut and sew apparel manufacturing (except contractors)30 companies
333923 Overhead traveling crane, hoist, and monorail system manufacturing30 companies
334413 Semiconductor and related device manufacturing30 companies
339920 Sporting and athletic goods manufacturing30 companies
541219 Other accounting services30 companies
541910 Marketing research and public opinion polling30 companies
561492 Court reporting and stenotype services30 companies
621991 Blood and organ banks30 companies
811121 Automotive body, paint, and interior repair and maintenance30 companies
221320 Sewage treatment facilities29 companies
311611 Animal (except poultry) slaughtering29 companies
325920 Explosives manufacturing29 companies
517810 All other telecommunications29 companies
541211 Offices of certified public accountants29 companies
541360 Geophysical surveying and mapping services29 companies

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About NAICS codes

The North American Industry Classification System gives each industry a code of up to six digits. Every federal contract names one, and its code sets the size standard a company must meet to bid as a small business. This list covers the codes on awards in our record, not all NAICS codes.