What are SIC Codes?
SIC Directory / Lookup
SIC to NAICS Conversion
What are NAICS Codes?
NAICS Directory / Lookup
NAICS to SIC Conversion
SIC/NAICS Business Lists - Databases
SIC/NAICS Code Appending
Canada Business Lists
Classification Systems Overview
Product Codes US & International
Additional Industry Codes
Specialized Business Codes
Occupational & Educational Codes
2018 Business List Specials!!!
The NAICS Directory contains a database of all the North American Industry Classification System codes. Use the search box or simply click on any category below.
Other Services (except Public Administration)
Repair and Maintenance
Personal and Laundry Services
Religious, Grantmaking, Civic, Professional, and Similar Organizations