Six Digit NAICS Codes & Titles NAICS Search Click Any NAICS Code to See The Description and Top 10 Companies in that field. Codes Titles Total Marketable US Businesses 54Professional, Scientific, and Technical Services2,196,5835411Legal Services350,012541110Offices of Lawyers326,978541120Offices of Notaries6,278541191Title Abstract and Settlement Offices 11,359541199All Other Legal Services 5,3975412Accounting, Tax Preparation, Bookkeeping, and Payroll Services 183,077541211Offices of Certified Public Accountants 69,470541213Tax Preparation Services 61,932541214Payroll Services 3,003541219Other Accounting Services 48,6725413Architectural, Engineering, and Related Services 254,611541310Architectural Services38,936541320Landscape Architectural Services83,712541330Engineering Services96,126541340Drafting Services1,674541350Building Inspection Services7,579541360Geophysical Surveying and Mapping Services0541370Surveying and Mapping (except Geophysical) Services12,965541380Testing Laboratories13,6195414Specialized Design Services 73,888541410Interior Design Services34,832541420Industrial Design Services1,805541430Graphic Design Services35,456541490Other Specialized Design Services1,7955415Computer Systems Design and Related Services 201,660541511Custom Computer Programming Services 107,317541512Computer Systems Design Services 88,191541513Computer Facilities Management Services 1,141541519Other Computer Related Services5,0115416Management, Scientific, and Technical Consulting Services 645,890541611Administrative Management and General Management Consulting Services 185,649541612Human Resources Consulting Services 14,128541613Marketing Consulting Services 58,521541614Process, Physical Distribution, and Logistics Consulting Services 3,185541618Other Management Consulting Services 318,388541620Environmental Consulting Services23,240541690Other Scientific and Technical Consulting Services42,7795417Scientific Research and Development Services 43,369541713Research and Development in Nanotechnology 0541714Research and Development in Biotechnology (except Nanobiotechnology)4,471541715Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 23,662541720Research and Development in the Social Sciences and Humanities 15,2365418Advertising, Public Relations, and Related Services 63,431541810Advertising Agencies23,515541820Public Relations Agencies16,073541830Media Buying Agencies778541840Media Representatives3,573541850Outdoor Advertising2,534541860Direct Mail Advertising4,880541870Advertising Material Distribution Services1,033541890Other Services Related to Advertising 11,0455419Other Professional, Scientific, and Technical Services 380,645541910Marketing Research and Public Opinion Polling12,935541921Photography Studios, Portrait 86,616541922Commercial Photography 15,989541930Translation and Interpretation Services6,081541940Veterinary Services 46,845541990All Other Professional, Scientific, and Technical Services212,179 Click Here for Data Appends & Targeted Marketing Lists
