Structure of NAICS Code 54 - Professional, Scientific, and Technical Services

Hierarchy

Each industry is classified hierarchically, starting from broad (3-digit) to specific (4-, 5-, 6-digit) codes, including extended 8-digit codes for detailed classification. Click on each category link to navigate to detailed pages with comprehensive industry information.

Categories

General
Specific

Hierarchy

3-Digits
4-Digits
5-Digits
6-Digits
5411 - Legal Services 5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services
54131 - Architectural Services 54132 - Landscape Architectural Services
541330 - Engineering Services NAICS 8-Digits (87 Codes)
541330-01 - Acoustical Consultants 541330-02 - Concrete Technologists 541330-03 - Contractors-Engineering General 541330-04 - Engineering & Architectural Services 541330-05 - Engineering-Job Shops 541330-06 - Engineers 541330-07 - Engineers-Acoustical 541330-08 - Engineers-Aeronautical 541330-09 - Engineers-Agricultural 541330-10 - Engineers-Air Cond Heating Ventilating 541330-11 - Engineering 541330-12 - Engineers-Automotive 541330-13 - Engineers-Chemical 541330-14 - Engineers-Civil 541330-15 - Engineers-Construction 541330-16 - Engineers-Consulting 541330-17 - Engineers-Control Systems 541330-18 - Engineers-Corrosion 541330-19 - Engineers-Cost 541330-20 - Engineers-Designing 541330-21 - Engineers-Drainage 541330-22 - Engineers-Electrical 541330-23 - Engineers-Electronic 541330-24 - Engineers-Energy Management 541330-25 - Engineers-Environmental 541330-26 - Engineers-Foundation 541330-27 - Engineers-Gas 541330-28 - Engineers-Geological 541330-29 - Engineers-Geotechnical 541330-30 - Engineers-Highways & Bridges 541330-31 - Engineers-Hydraulic 541330-32 - Engineers-Industrial 541330-33 - Engineers-Inspecting 541330-34 - Engineers-Irrigation 541330-35 - Engineers-Land Planning 541330-36 - Engineers-Machine Design 541330-37 - Engineers-Management 541330-38 - Engineers-Manufacturing 541330-39 - Engineers-Marine 541330-40 - Engineers-Material Handling 541330-41 - Engineers-Mechanical 541330-42 - Engineers-Metallurgical 541330-43 - Engineers-Mining 541330-44 - Engineers-Municipal 541330-45 - Engineers-Nuclear 541330-46 - Engineers-Petroleum 541330-47 - Engineers-Petroleum Refining & Trans 541330-48 - Engineers-Pipe Line 541330-49 - Engineers-Plumbing 541330-50 - Engineers-Power 541330-51 - Engineers-Processing 541330-52 - Engineers-Professional 541330-53 - Engineers-Refrigerating 541330-54 - Engineers-Research 541330-55 - Engineers-Safety 541330-56 - Engineers-Sanitary 541330-57 - Engineers-Solar 541330-58 - Engineers-Structural 541330-59 - Engineers-Technical Service 541330-60 - Engineers-Testing 541330-61 - Engineers-Traffic & Transportation 541330-62 - Engineers-Transportation 541330-63 - Engineers-Waste Water Treatment 541330-64 - Engineers-Water Supply 541330-65 - Lighting Engineers 541330-66 - Machine Tools-Designers & Consultants 541330-67 - Machinery-Designing 541330-68 - Naval Architects 541330-69 - Engineers-Pneumatic 541330-70 - Vibration Measurement Service 541330-71 - Engineers-Pulp & Paper 541330-72 - Engineers-Earthquake 541330-73 - Engineers-Plastic 541330-75 - Technologists-Professional 541330-76 - Engineers-Training & Publishing 541330-77 - Roofing Service Consultants 541330-78 - Engineers-Building Moving 541330-79 - Engineers-Pharmaceutical 541330-80 - Engineers Thermal & Moisture Protection 541330-81 - Engineers Textile 541330-82 - Engineers-Computer 541330-84 - Engineers Fiberglass 541330-85 - Engineers-Meat Packing & Food Processing 541330-86 - Horticultural Engineers 541330-87 - Aviation Engineers 541330-88 - Engineers-Technology 541330-89 - Engineers Naval
54133 - Engineering Services 54134 - Drafting Services 54135 - Building Inspection Services 54136 - Geophysical Surveying and Mapping Services 54137 - Surveying and Mapping (except Geophysical) Services
541380 - Testing Laboratories and Services NAICS 8-Digits (51 Codes)
541380-01 - Air Pollution Measuring Service 541380-02 - Asbestos-Consulting & Testing 541380-03 - Assayers & Assaying Service 541380-04 - Back Flow Device Testing Services 541380-05 - Calibration Services 541380-06 - Carbon Monoxide Testing 541380-07 - Concrete Inspection 541380-08 - Contamination Control Equipment & Supplies 541380-09 - Contamination Control Services 541380-10 - Electrical Power Systems-Testing 541380-11 - Dairy Laboratories 541380-12 - Forensic Consultants 541380-13 - Hearing & Sound Level Testing 541380-14 - Hydrostatic Testing 541380-15 - Indoor Air Quality Testing 541380-16 - Infrared Inspection Service 541380-17 - Iso Certification 541380-18 - Laboratories-Analytical 541380-19 - Mudlogging 541380-21 - Laboratories-Metallurgical 541380-22 - Laboratories-Petroleum 541380-23 - Laboratories-Testing 541380-24 - Liquor Testing 541380-25 - Machine Shops-Experimental 541380-26 - Metallurgists 541380-27 - Oil Well Core Analysis 541380-28 - Optical Engineers 541380-29 - Plastics-Research & Consulting 541380-30 - Pollution Control Consultants 541380-31 - Poultry Research 541380-33 - Radon Testing & Correction 541380-34 - Soil Analysis 541380-35 - Soil Testing 541380-36 - Surface Plates 541380-37 - Tank Strapping & Calibration 541380-38 - Testing (Non-Destructive) 541380-39 - Testing (Toxic Material & Gases) 541380-40 - Testing Equipment-Environmental 541380-41 - Ultrasonic Inspection Service 541380-42 - Well Testing 541380-43 - X-Ray Inspection Service 541380-44 - X-Ray Laboratories-Industrial 541380-46 - Water Testing 541380-47 - Nuclear Research & Development 541380-48 - Seed Testing 541380-49 - Window Testing Laboratories 541380-50 - Metals-Testing 541380-51 - Thermal Imaging 541380-53 - Laboratories Water & Waste Water 541380-54 - Govt-Coml Physical/Biological Research 541380-55 - Cannabis-Laboratory Testing
54138 - Testing Laboratories and Services
5413 - Architectural, Engineering, and Related Services
54141 - Interior Design Services 54142 - Industrial Design Services 54143 - Graphic Design Services 54149 - Other Specialized Design Services
5414 - Specialized Design Services
541511 - Custom Computer Programming Services NAICS 8-Digits (9 Codes) 541512 - Computer Systems Design Services NAICS 8-Digits (24 Codes) 541513 - Computer Facilities Management Services NAICS 8-Digits (1 Codes) 541519 - Other Computer Related Services NAICS 8-Digits (7 Codes)
54151 - Computer Systems Design and Related Services
5415 - Computer Systems Design and Related Services
541611 - Administrative Management and General Management Consulting Services NAICS 8-Digits (24 Codes) 541612 - Human Resources Consulting Services NAICS 8-Digits (19 Codes) 541613 - Marketing Consulting Services NAICS 8-Digits (9 Codes) 541614 - Process, Physical Distribution, and Logistics Consulting Services NAICS 8-Digits (18 Codes) 541618 - Other Management Consulting Services NAICS 8-Digits (33 Codes)
54161 - Management Consulting Services 54162 - Environmental Consulting Services
541690 - Other Scientific and Technical Consulting Services NAICS 8-Digits (81 Codes)
541690-01 - Park Planning 541690-02 - Scientists-Consulting 541690-04 - Expertise & Technical Analysis 541690-05 - Citrus Consultants 541690-06 - Lasers & Electro Optics Consultants 541690-08 - Energy Code Compliance Analysts 541690-09 - Agricultural Marketing 541690-10 - Agricultural Consultants 541690-11 - Engineers-Hazardous & Industrial Waste 541690-12 - Chemists-Manufacturing 541690-13 - Chemists-Analytical & Consulting 541690-14 - Geological Consultants 541690-15 - Minerals 541690-16 - Water Analysis 541690-17 - Mining Consultants 541690-18 - Service Bureaus 541690-19 - Nuclear Energy Consultants 541690-20 - Radio Electronic Consultants 541690-21 - Recreation Program Consultants 541690-22 - Sales Counselors 541690-23 - Shipping Consultants 541690-24 - Oil Field Consultants 541690-25 - Nursing Consultants 541690-26 - Textile Consultants 541690-27 - Motel & Hotel Consultants 541690-28 - Material Handling Systems Consultants 541690-29 - Marine Consultants 541690-30 - Livestock Consultants 541690-31 - Lighting Consultants 541690-32 - Laundry Consultants 541690-33 - Industrial Relations Consultants 541690-34 - Industrial Hygiene Consultants 541690-35 - Traffic & Parking Consultants 541690-36 - Freight-Traffic Consultants 541690-37 - Fire Protection Consultants 541690-38 - Unemployment Insurance Consultants 541690-39 - Facilities & Space Planning Consultants 541690-40 - Welding-Specifications Consultants 541690-41 - Executive Training Consultants 541690-42 - Zoning Consultants 541690-43 - Farm Management Systems 541690-44 - Dairy Consultants 541690-45 - Telephone Consultants 541690-46 - Water Purification Consulting Services 541690-47 - Television Service-Consulting 541690-48 - Television Station Planning 541690-49 - Calculating Charts & Tables 541690-50 - Elevator Consultants 541690-51 - Accident Reconstruction Service 541690-52 - Engineers-Communications 541690-53 - Architectural Consultants 541690-54 - Economic Development Agencies 541690-55 - Sales Training 541690-56 - Product Design/Development Consultants 541690-57 - Automobile-Purchasing Consultants 541690-58 - Writing Consultants 541690-59 - Medical Legal Consultants 541690-60 - International Consultants 541690-61 - Fiber Optics-Systems Consultants 541690-62 - Government-Relations Consultants 541690-64 - Welding Inspection & Consulting 541690-65 - Combustion & Heating Consultants 541690-66 - Modeling Consultants-Photographic 541690-67 - Planning Consultants 541690-68 - Media Consultants 541690-69 - Traffic Condition Information 541690-70 - Architects Referral Service 541690-71 - Municipal Consultants 541690-72 - Assisted Living Facility Consultants 541690-73 - Camping Consultants 541690-74 - Aviation Consultants 541690-75 - Automation Consultants 541690-76 - Aquaculture Consultants 541690-77 - Physicists 541690-78 - Geochemists 541690-79 - Inventors 541690-80 - Psychological Examiners 541690-81 - Geophysical Services 541690-83 - Chemical Consultants 541690-84 - Park & Recreation Consultants 541690-85 - Hydrology
54169 - Other Scientific and Technical Consulting Services
5416 - Management, Scientific, and Technical Consulting Services
541713 - Research and Development in Nanotechnology 541714 - Research and Development in Biotechnology (except Nanobiotechnology) NAICS 8-Digits (23 Codes) 541715 - Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) NAICS 8-Digits (21 Codes)
54171 - Research and Development in the Physical, Engineering, and Life Sciences 54172 - Research and Development in the Social Sciences and Humanities
5417 - Scientific Research and Development Services
54181 - Advertising Agencies 54182 - Public Relations Agencies 54183 - Media Buying Agencies 54184 - Media Representatives 54185 - Indoor and Outdoor Display Advertising 54186 - Direct Mail Advertising 54187 - Advertising Material Distribution Services 54189 - Other Services Related to Advertising
5418 - Advertising, Public Relations, and Related Services
54191 - Marketing Research and Public Opinion Polling 54192 - Photographic Services 54193 - Translation and Interpretation Services 54194 - Veterinary Services 54199 - All Other Professional, Scientific, and Technical Services
5419 - Other Professional, Scientific, and Technical Services
541 - Professional, Scientific, and Technical Services