Six-Digit NAICS Codes & Titles

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Codes	Titles	Number of US Businesses
54	Professional, Scientific, and Technical Services	2,648,062
541110	Offices of Lawyers	378,896
541120	Offices of Notaries	6,635
541191	Title Abstract and Settlement Offices	11,839
541199	All Other Legal Services	4,813
541211	Offices of Certified Public Accountants	77,650
541213	Tax Preparation Services	58,665
541214	Payroll Services	2,600
541219	Other Accounting Services	80,641
541310	Architectural Services	47,906
541320	Landscape Architectural Services	90,294
541330	Engineering Services	110,652
541340	Drafting Services	2,433
541350	Building Inspection Services	6,563
541360	Geophysical Surveying and Mapping Services	0
541370	Surveying and Mapping (except Geophysical) Services	14,921
541380	Testing Laboratories	10,625
541410	Interior Design Services	56,852
541420	Industrial Design Services	2,735
541430	Graphic Design Services	52,696
541490	Other Specialized Design Services	2,439
541511	Custom Computer Programming Services	55,881
541512	Computer Systems Design Services	88,801
541513	Computer Facilities Management Services	1,278
541519	Other Computer Related Services	4,127
541611	Administrative Management and General Management Consulting Services	170,993
541612	Human Resources Consulting Services	13,720
541613	Marketing Consulting Services	59,173
541614	Process, Physical Distribution, and Logistics Consulting Services	3,678
541618	Other Management Consulting Services	273,601
541620	Environmental Consulting Services	22,010
541690	Other Scientific and Technical Consulting Services	44,921
541711	Research and Development in Biotechnology	1,491
541712	Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	26,103
541720	Research and Development in the Social Sciences and Humanities	18,759
541810	Advertising Agencies	29,770
541820	Public Relations Agencies	22,842
541830	Media Buying Agencies	1,114
541840	Media Representatives	4,833
541850	Outdoor Advertising	3,235
541860	Direct Mail Advertising	7,958
541870	Advertising Material Distribution Services	1,927
541890	Other Services Related to Advertising	13,327
541910	Marketing Research and Public Opinion Polling	15,446
541921	Photography Studios, Portrait	97,952
541922	Commercial Photography	23,799
541930	Translation and Interpretation Services	7,409
541940	Veterinary Services	46,568
541990	All Other Professional, Scientific, and Technical Services	567,491